Add backport GH action

.github/workflows/backport.yaml

@@ -0,0 +1,31 @@
+name: Automated Backporting
+
+on:
+  pull_request_target:
+    types:
+      - closed
+    branches:
+      - main
+
+jobs:
+  create_backport:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+      - if: contains(github.event.pull_request.labels.*.name, '13.x')
+        name: 13.x Backport
+        uses: kiegroup/[email protected]
+        with:
+          target-branch: 13.x
+          pull-request: ${{ github.event.pull_request.url }}
+          auth: ${{ secrets.GITHUB_TOKEN }}
+          no-squash: true
+
+      - if: contains(github.event.pull_request.labels.*.name, '14.x')
+        name: 14.x Backport
+        uses: kiegroup/[email protected]
+        with:
+          target-branch: 14.x
+          pull-request: ${{ github.event.pull_request.url }}
+          auth: ${{ secrets.GITHUB_TOKEN }}
+          no-squash: true

.github/workflows/backport_reaper.yaml

@@ -0,0 +1,19 @@
+name: Backport branch reaper
+
+on:
+  pull_request_target:
+    types:
+      - closed
+    branches:
+      - '*.x'
+
+jobs:
+  remove_backport_branch:
+    if: startsWith(github.event.pull_request.head.ref, 'bp-')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Delete PR head branches
+        uses: dawidd6/action-delete-branch@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          numbers: ${{github.event.pull_request.number}}