ci: 💚 Add CI to publish on release.

.github/workflows/release.yml

@@ -0,0 +1,26 @@
+name: Publish to pub.dev
+
+on:
+  push:
+    tags:
+      - "[0-9]+.[0-9]+.[0-9]+" # tag pattern on pub.dev: '{{version}}'
+      - "[0-9]+.[0-9]+.[0-9]+-*" # tag pattern on pub.dev: '{{version}}-{suffix}'
+
+# Publish using custom workflow
+jobs:
+  publish:
+    permissions:
+      id-token: write # Required for authentication using OIDC
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dart-lang/setup-dart@v1
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+          flutter-version: "3.22.3"
+      - name: Install dependencies
+        run: flutter pub get
+      - name: Publish
+        run: dart pub publish --force