Create coverage.yml

Author: Meganton

.github/workflows/coverage.yml

@@ -0,0 +1,13 @@
+name: Tests
+on: [push, pull_request]
+env:
+  CI: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Coveralls GitHub Action
+        uses: coverallsapp/github-action@v2.3.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}