os matrix test in ci

Author: jbolda

.github/workflows/verify.yaml

@@ -11,7 +11,11 @@ permissions:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    name: test ${{ matrix.os }}
 
     steps:
       - name: checkout