add release action

Author: npv2k1

.github/workflows/release.yaml

@@ -0,0 +1,21 @@
+name: Release Dev Container feature
+on:
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      
+      - name: Publish Features
+        uses: devcontainers/action@v1
+        with:
+          publish-features: "true"
+          base-path-to-features: "./src"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+permissions:
+  contents: read
+  packages: write