Add Ruby build CI for each supported version

.github/workflows/build.yml

@@ -0,0 +1,36 @@
+name: Build
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # https://www.ruby-lang.org/en/downloads/branches/
+        ruby-version:
+          - "3.0"
+          - "3.1"
+          - "3.2"
+          - "3.3"
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby ${{ matrix.ruby-version }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+      - run: sudo apt update && sudo apt install -y ruby-dev
+      - run: gem build
+      - run: gem install --verbose ruzzy-*.gem
+        env:
+          RUZZY_DEBUG: "1"
+          MAKE: "make --environment-overrides V=1"
+          CC: "clang"
+          CXX: "clang++"
+          LDSHARED: "clang -shared"
+          LDSHAREDXX: "clang++ -shared"

.github/workflows/ci.yml → .github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: CI
+name: Test
 
 on:
   pull_request: