Add cherrypick action (#1578)

* Add cherry-pick action.

Signed-off-by: Jerome Luckenbach <github@luckenba.ch>

* Add newline.

Signed-off-by: Jerome Luckenbach <github@luckenba.ch>

.github/workflows/cherryPickAutomation.yml

@@ -0,0 +1,39 @@
+# Automatically create pull requests to release branches on condition
+
+on:
+  pull_request:
+    branches:
+      - main
+    types: ["closed"]
+
+jobs:
+  cherry_pick_release_stable:
+    runs-on: ubuntu-latest
+    name: Cherry pick into release-stable
+    if: contains(github.event.pull_request.labels.*.name, 'release-stable')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Cherry pick action
+        uses: carloscastrojumo/github-cherry-pick-action@v1.0.1
+        with:
+          branch: final-stable
+          labels: |
+            cherry-pick
+  cherry_pick_release_v2_5_x:
+    runs-on: ubuntu-latest
+    name: Cherry pick into release-v2.5
+    if: contains(github.event.pull_request.labels.*.name, 'release-v2.5.x')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Cherry pick action
+        uses: carloscastrojumo/github-cherry-pick-action@v1.0.1
+        with:
+          branch: final-2.5.x
+          labels: |
+            cherry-pick