add Detect Merge Conflicts workflow

Author: valentijnscholten

.github/workflows/detect-merge-conflicts.yaml

@@ -0,0 +1,23 @@
+name: "Detect Merge Conflicts"
+on:
+  workflow_dispatch:
+  push:
+    branch:
+      - dev
+      - master
+      - release/*
+      
+  pull_request_target:
+    types: [synchronize]
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - name: check if prs are conflicted
+        uses: eps1lon/actions-label-merge-conflict@releases/2.x
+        with:
+          dirtyLabel: "conflicts-detected"
+          repoToken: "${{ secrets.GITHUB_TOKEN }}"
+          commentOnDirty: "This pull request has conflicts, please resolve those before we can evaluate the pull request."
+          commentOnClean: "Conflicts have been resolved. A maintainer will review the pull request shortly."