Add github action to publish package to pub.dev

.github/workflows/publish.yml

@@ -0,0 +1,24 @@
+name: Publish to pub.dev
+
+on:
+  push:
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+*'
+
+jobs:
+  publish:
+    permissions:
+      id-token: write # Required for authentication using OIDC
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      # Setup Flutter SDK and automated pub.dev credentials
+      - uses: flutter-actions/setup-flutter@v3
+      - uses: flutter-actions/setup-pubdev-credentials@v1
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Publish
+        run: flutter pub publish