add github workflow

Author: chkp-avivm

.github/workflows/main.yml

@@ -0,0 +1,22 @@
+name: Delete Merged Branch
+
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  delete_branch:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.base.ref }} # Checkout the target branch
+
+      - name: Delete source branch
+        run: |
+          git push origin --delete ${{ github.event.pull_request.head.ref }}