add github release CI step

.github/workflows/workflow.yml

@@ -94,3 +94,27 @@ jobs:
           tar -xzf bunny-upload.tar.gz
           echo "${{ secrets.BUNNY_CONFIG }}" > bunny-config.yaml
           ./bunny-upload -c bunny-config.yaml
+
+  github-release:
+    name: Github Release
+    needs: build
+    if: ${{ startsWith(github.ref, 'refs/tags/') }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+      - name: Prepare release
+        run: |
+          TAG=$(git describe --tags --abbrev=0 || echo "latest")
+          mv dist synapse-admin-$TAG
+          tar chvzf synapse-admin-$TAG.tar.gz synapse-admin-$TAG
+      - uses: softprops/action-gh-release@v2
+        with:
+          files: synapse-admin-$TAG.tar.gz
+          generate_release_notes: true
+          make_latest: "true"
+          draft: false
+          prerelease: false