add workflows for macOS for contrib 5.x

Author: fengyuentau

.github/workflows/PR-5.x.yaml

@@ -13,4 +13,10 @@ jobs:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-5.x-U20.yaml@main
 
   W10:
-    uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-5.x-W10.yaml@main
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-5.x-W10.yaml@main
+
+  macOS-ARM64:
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-5.x-macOS-ARM64.yaml@main
+
+  macOS-X64:
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-5.x-macOS-x86_64.yaml@main