Add release workflow to publish pre-built binaries

.github/workflows/release.yml

@@ -0,0 +1,54 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    name: Build and Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "^1.20"
+
+      - name: Build binaries
+        run: |
+          VERSION=${GITHUB_REF_NAME}
+          BINARY=protoc-gen-openapi
+          MODULE=./cmd/protoc-gen-openapi
+
+          platforms=(
+            "linux/amd64"
+            "linux/arm64"
+            "darwin/amd64"
+            "darwin/arm64"
+            "windows/amd64"
+            "windows/arm64"
+          )
+
+          for platform in "${platforms[@]}"; do
+            GOOS="${platform%/*}"
+            GOARCH="${platform#*/}"
+            output="${BINARY}-${GOOS}-${GOARCH}"
+            if [ "$GOOS" = "windows" ]; then
+              output="${output}.exe"
+            fi
+            echo "Building ${output}..."
+            GOOS=$GOOS GOARCH=$GOARCH go build -trimpath -ldflags="-s -w" -o "dist/${output}" $MODULE
+          done
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: dist/*