Prepare Repository for Merge Queue

- Add Overall Result job which depends on all required status checks
- Add merge_group event

Author: opajonk

.github/workflows/ci.yaml

@@ -5,6 +5,7 @@ on:
   push:
     branches:
       - main
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -17,10 +18,12 @@ jobs:
         os: [arm64, amd64]
         include:
           - os: amd64
-            name: 'DevContainer (amd64)'
+            name: 'build/amd64'
+            description: "DevContainer (amd64)"
             runner: ubuntu-24.04
           - os: arm64
-            name: 'DevContainer (arm64)'
+            name: 'build/arm64'
+            description: "DevContainer (arm64)"
             runner: ubuntu-24.04-arm
 
     name: '${{ matrix.name }}'
@@ -72,6 +75,24 @@ jobs:
               ./scripts/publish.sh --${{ matrix.os }} "main"
             fi
 
+  overall-result:
+    name: build/overall-result
+    description: "Overall Result"
+    runs-on: ubuntu-24.04
+    needs:
+      [
+        build/amd64,
+        build/arm64,
+      ]
+    if: ${{ !cancelled() }}
+    steps:
+      - name: Successful verification
+        if: ${{ !(contains(needs.*.result, 'failure')) }}
+        run: exit 0
+      - name: Failing verification
+        if: ${{ contains(needs.*.result, 'failure') }}
+        run: exit 1
+
   merge:
     name: 'Merge Labels (main only)'
     needs: ["build"]