Create codecov.yaml

.github/workflows/codecov.yaml

@@ -0,0 +1,20 @@
+name: Run codecov
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3    
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3