Add GitHub Actions workflow for automated releases

This workflow builds binaries for macOS (AMD64 and ARM64) and Linux AMD64 when commits are pushed to the main branch, and publishes them as GitHub releases.

Author: jritsema

.github/workflows/release.yml

@@ -0,0 +1,65 @@
+name: Build and Release
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Build and Release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.21'
+          check-latest: true
+
+      - name: Get version
+        id: get_version
+        run: |
+          VERSION=$(git describe --tags --always --dirty | sed 's/^v//')
+          if [ -z "$VERSION" ]; then
+            VERSION=$(date +'%Y%m%d%H%M%S')
+          fi
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+      - name: Build for macOS (AMD64)
+        run: |
+          GOOS=darwin GOARCH=amd64 go build -o mcp-darwin-amd64 -ldflags="-X 'main.Version=${{ env.VERSION }}'" ./...
+          chmod +x mcp-darwin-amd64
+          zip -j mcp-darwin-amd64.zip mcp-darwin-amd64
+
+      - name: Build for macOS (ARM64)
+        run: |
+          GOOS=darwin GOARCH=arm64 go build -o mcp-darwin-arm64 -ldflags="-X 'main.Version=${{ env.VERSION }}'" ./...
+          chmod +x mcp-darwin-arm64
+          zip -j mcp-darwin-arm64.zip mcp-darwin-arm64
+
+      - name: Build for Linux (AMD64)
+        run: |
+          GOOS=linux GOARCH=amd64 go build -o mcp-linux-amd64 -ldflags="-X 'main.Version=${{ env.VERSION }}'" ./...
+          chmod +x mcp-linux-amd64
+          zip -j mcp-linux-amd64.zip mcp-linux-amd64
+
+      - name: Create Release
+        id: create_release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: Release ${{ env.VERSION }}
+          tag_name: v${{ env.VERSION }}
+          draft: false
+          prerelease: false
+          files: |
+            mcp-darwin-amd64.zip
+            mcp-darwin-arm64.zip
+            mcp-linux-amd64.zip
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}