Add key4hep based workflows

.github/workflows/key4hep.yml

@@ -0,0 +1,18 @@
+name: keyh4ep
+on: [push, pull_request]
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        build_type: ["release", "nightly"]
+        image: ["alma9", "ubuntu22", "centos7"]
+      fail-fast: false
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: key4hep/key4hep-actions/key4hep-build@main
+      with:
+        build_type: ${{ matrix.build_type }}
+        image: ${{ matrix.image }}