🔖 Add pub publish action.

Author: AlexV525

.github/workflows/pub_publish.yml

@@ -0,0 +1,21 @@
+name: Pub Publish plugin
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Publish
+        uses: sakebook/[email protected]
+        with:
+          credential: ${{ secrets.CREDENTIAL_JSON }}
+          flutter_package: true
+          skip_test: true
+          dry_run: false