add auto build workflow

.github/workflows/release.yml

@@ -0,0 +1,82 @@
+name: Build & Release
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - name: Build
+        run: |
+          sudo apt-get update
+          sudo apt-get build-dep --no-install-recommends -y .
+          dpkg-buildpackage -us -uc
+      - name: Workaround actions/upload-artifact#176
+        run: |
+          echo "artifacts_path=$(realpath ..)" >> $GITHUB_ENV
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ github.event.repository.name }}
+          path: |
+            ${{ env.artifacts_path }}/*.deb
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - uses: actions/download-artifact@v4
+        with:
+          name: ${{ github.event.repository.name }}
+      - name: Check if the latest version is releasable
+        run: |
+          version="$(dpkg-parsechangelog -S Version)"
+          echo "version=$version" >> $GITHUB_ENV
+          echo "changes<<EOF" >> $GITHUB_ENV
+          echo '```' >> $GITHUB_ENV
+          echo "$(dpkg-parsechangelog -S Changes)" >> $GITHUB_ENV
+          echo '```' >> $GITHUB_ENV
+          echo "EOF" >> $GITHUB_ENV
+          if [[ -n "$(git tag -l "$version")" ]]
+          then
+            echo "distro=UNRELEASED" >> $GITHUB_ENV
+          else
+            echo "distro=$(dpkg-parsechangelog -S Distribution)" >> $GITHUB_ENV
+          fi
+      - name: Release
+        if: env.distro != 'UNRELEASED'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ env.version }}
+          body_path: README.md
+          token: ${{ secrets.GITHUB_TOKEN }}
+          target_commitish: main
+          draft: false
+          fail_on_unmatched_files: false
+          files: |
+            *.deb
+      - name: Append changelog
+        if: env.distro != 'UNRELEASED'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ env.version }}
+          body: |
+            ## Changelog for ${{ env.version }}
+            ${{ env.changes }}
+          append_body: true
+