feat: add branch sync from main to dev workflow

Author: fernandotonacoder

.github/workflows/sync-main-to-dev.yml

@@ -0,0 +1,30 @@
+name: Sync Main → Dev
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Configure Git
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+      - name: Sync main to dev
+        run: |
+          git checkout dev
+          git merge origin/main --no-edit
+          git push origin dev