add release workflow

.github/workflows/ci.yml

@@ -0,0 +1,14 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  syntax-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: node --check main.js

.github/workflows/release.yml

@@ -0,0 +1,25 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "*"
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Create release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          tag="${GITHUB_REF#refs/tags/}"
+          gh release create "$tag" \
+            --title "$tag" \
+            --generate-notes \
+            main.js manifest.json versions.json

versions.json

@@ -0,0 +1,3 @@
+{
+  "1.0.0": "1.1.0"
+}