feat: run Prettier on merge to main

.github/workflows/prettier.yml

@@ -0,0 +1,27 @@
+name: Prettier Check on Merge
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  prettier:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          # Make sure the actual branch is checked out when running on pull requests
+          ref: ${{ github.head_ref }}
+
+      - name: Prettify code
+        uses: creyD/[email protected]
+        with:
+          # Specify which files or directories to format
+          prettier_options: --write './packages/core/**/*' './packages/cli/**/*'
+
+          # Optionally set the working directory if needed
+          # working_directory: ./ # Uncomment and adjust if your setup requires a specific directory