add matrix

Author: silverwind

.github/workflows/ci.yaml

@@ -3,6 +3,10 @@ on: [push, pull_request]
 
 jobs:
   test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{matrix.os}}
     steps:
       - uses: actions/checkout@v4