feat: add publish workflow

Author: segfaultmedaddy

.github/workflows/publish.yml

@@ -0,0 +1,25 @@
+name: Publish to pub.dev
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+*"
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dart-lang/setup-dart@v1
+
+      - run: dart pub get
+      - run: dart format --output=none --set-exit-if-changed .
+      - run: dart analyze
+      - run: dart test
+
+      - name: Publish to pub.dev
+        run: dart pub publish --force