Add GitHub Actions for library and example apps

.github/workflows/build-android.yml

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+name: Test Android build
+on:
+  pull_request:
+    paths:
+      - .github/workflows/build-android.yml
+      - android/**
+      - cpp/**
+      - example/package.json
+      - example/android/**
+      - react-native.config.js
+  merge_group:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/build-android.yml
+      - android/**
+      - cpp/**
+      - example/package.json
+      - example/android/**
+      - react-native.config.js
+
+jobs:
+  build:
+    if: github.repository == 'Expensify/react-native-live-markdown'
+    runs-on: ubuntu-latest
+    concurrency:
+      group: build-android-${{ github.ref }}
+      cancel-in-progress: true
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v4
+
+      - name: Setup Java 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: 17
+
+      - name: Install node_modules
+        run: yarn install --immutable
+
+      - name: Build app
+        working-directory: example/android
+        run: ./gradlew assembleDebug --build-cache -PreactNativeArchitectures=arm64-v8a

.github/workflows/build-ios.yml

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+name: Test iOS build
+on:
+  pull_request:
+    paths:
+      - .github/workflows/build-ios.yml
+      - RNLiveMarkdown.podspec
+      - ios/**
+      - cpp/**
+      - example/package.json
+      - example/ios/**
+  merge_group:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/build-ios.yml
+      - RNLiveMarkdown.podspec
+      - ios/**
+      - cpp/**
+      - example/package.json
+      - example/ios/**
+
+jobs:
+  build:
+    if: github.repository == 'Expensify/react-native-live-markdown'
+    runs-on: macos-13
+    concurrency:
+      group: build-ios-${{ github.ref }}
+      cancel-in-progress: true
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v4
+
+      - name: Restore node_modules from cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            node_modules
+            example/node_modules
+          key: build-ios-node-modules-${{ hashFiles('yarn.lock') }}
+          restore-keys: build-ios-node-modules-
+
+      - name: Install node_modules
+        run: yarn install --immutable
+
+      - name: Restore Pods from cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            example/ios/Pods
+            ~/Library/Caches/CocoaPods
+            ~/.cocoapods
+          key: build-ios-pods-${{ hashFiles('example/ios/Podfile.lock') }}
+          restore-keys: build-ios-pods-
+
+      - name: Install Pods
+        working-directory: example/ios
+        run: |
+          bundler install
+          bundler exec pod install
+
+      - name: Remove .xcode.env.local
+        working-directory: example/ios
+        run: rm -rf .xcode.env.local
+
+      - name: Restore build artifacts from cache
+        uses: actions/cache@v4
+        with:
+          path: ~/Library/Developer/Xcode/DerivedData
+          key: build-ios-derived-data-${{ hashFiles('example/ios/Podfile.lock') }}
+          restore-keys: build-ios-derived-data-
+
+      - name: Build app
+        working-directory: example
+        run: npx react-native@latest run-ios --no-packager

.github/workflows/build-web.yml

@@ -0,0 +1,39 @@
+name: Test web build
+on:
+  pull_request:
+    paths:
+      - .github/workflows/build-web.yml
+      - src/**
+      - WebExample/**
+  merge_group:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/build-web.yml
+      - src/**
+      - WebExample/**
+
+jobs:
+  build:
+    if: github.repository == 'Expensify/react-native-live-markdown'
+    runs-on: ubuntu-latest
+    concurrency:
+      group: build-web-${{ github.ref }}
+      cancel-in-progress: true
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v4
+
+      - name: Install node_modules
+        run: yarn install --immutable
+
+      - name: Install WebExample node_modules
+        working-directory: WebExample
+        run: npm ci
+
+      - name: Build app
+        working-directory: WebExample
+        run: npx expo export:web

.github/workflows/check.yml

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+name: Typecheck, lint and test
+on:
+  pull_request:
+  merge_group:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  check:
+    if: github.repository == 'Expensify/react-native-live-markdown'
+    runs-on: ubuntu-latest
+    concurrency:
+      group: check-root-${{ github.ref }}
+      cancel-in-progress: true
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v4
+
+      - name: Use Node.js 18
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      - name: Install node_modules
+        run: yarn install --immutable
+
+      - name: Install parser node_modules
+        working-directory: parser
+        run: npm ci
+
+      - name: Install WebExample node_modules
+        working-directory: WebExample
+        run: npm ci
+
+      - name: Verify there's no parser diff
+        working-directory: parser
+        run: |
+          npm run build
+          if ! git diff --name-only --exit-code; then
+            # shellcheck disable=SC2016
+            echo 'Error: Parser diff detected! Please run `cd parser && npm run build` and commit the changes.'
+            exit 1
+          fi
+
+      - name: Typecheck library
+        run: yarn tsc --project tsconfig.json --noEmit
+
+      - name: Typecheck parser
+        run: yarn tsc --project parser/tsconfig.json --noEmit
+
+      - name: Typecheck example app
+        run: yarn tsc --project example/tsconfig.json --noEmit
+
+      - name: Typecheck WebExample app
+        run: yarn tsc --project WebExample/tsconfig.json --noEmit
+
+      - name: Lint
+        run: yarn lint
+
+      - name: Test
+        run: yarn test

example/Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    CFPropertyList (3.0.7)
+      base64
+      nkf
+      rexml
+    activesupport (7.0.8.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+    addressable (2.8.6)
+      public_suffix (>= 2.0.2, < 6.0)
+    algoliasearch (1.27.5)
+      httpclient (~> 2.8, >= 2.8.3)
+      json (>= 1.5.1)
+    atomos (0.1.3)
+    base64 (0.2.0)
+    claide (1.1.0)
+    cocoapods (1.14.3)
+      addressable (~> 2.8)
+      claide (>= 1.0.2, < 2.0)
+      cocoapods-core (= 1.14.3)
+      cocoapods-deintegrate (>= 1.0.3, < 2.0)
+      cocoapods-downloader (>= 2.1, < 3.0)
+      cocoapods-plugins (>= 1.0.0, < 2.0)
+      cocoapods-search (>= 1.0.0, < 2.0)
+      cocoapods-trunk (>= 1.6.0, < 2.0)
+      cocoapods-try (>= 1.1.0, < 2.0)
+      colored2 (~> 3.1)
+      escape (~> 0.0.4)
+      fourflusher (>= 2.3.0, < 3.0)
+      gh_inspector (~> 1.0)
+      molinillo (~> 0.8.0)
+      nap (~> 1.0)
+      ruby-macho (>= 2.3.0, < 3.0)
+      xcodeproj (>= 1.23.0, < 2.0)
+    cocoapods-core (1.14.3)
+      activesupport (>= 5.0, < 8)
+      addressable (~> 2.8)
+      algoliasearch (~> 1.0)
+      concurrent-ruby (~> 1.1)
+      fuzzy_match (~> 2.0.4)
+      nap (~> 1.0)
+      netrc (~> 0.11)
+      public_suffix (~> 4.0)
+      typhoeus (~> 1.0)
+    cocoapods-deintegrate (1.0.5)
+    cocoapods-downloader (2.1)
+    cocoapods-plugins (1.0.0)
+      nap
+    cocoapods-search (1.0.1)
+    cocoapods-trunk (1.6.0)
+      nap (>= 0.8, < 2.0)
+      netrc (~> 0.11)
+    cocoapods-try (1.2.0)
+    colored2 (3.1.2)
+    concurrent-ruby (1.2.3)
+    escape (0.0.4)
+    ethon (0.16.0)
+      ffi (>= 1.15.0)
+    ffi (1.16.3)
+    fourflusher (2.3.1)
+    fuzzy_match (2.0.4)
+    gh_inspector (1.1.3)
+    httpclient (2.8.3)
+    i18n (1.14.4)
+      concurrent-ruby (~> 1.0)
+    json (2.7.2)
+    minitest (5.22.3)
+    molinillo (0.8.0)
+    nanaimo (0.3.0)
+    nap (1.1.0)
+    netrc (0.11.0)
+    nkf (0.2.0)
+    public_suffix (4.0.7)
+    rexml (3.2.6)
+    ruby-macho (2.5.1)
+    typhoeus (1.4.1)
+      ethon (>= 0.9.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    xcodeproj (1.24.0)
+      CFPropertyList (>= 2.3.3, < 4.0)
+      atomos (~> 0.1.3)
+      claide (>= 1.0.2, < 2.0)
+      colored2 (~> 3.1)
+      nanaimo (~> 0.3.0)
+      rexml (~> 3.2.4)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activesupport (>= 6.1.7.5, < 7.1.0)
+  cocoapods (>= 1.13, < 1.15)
+
+RUBY VERSION
+   ruby 2.7.8p225
+
+BUNDLED WITH
+   2.1.4