feat: github actions with codecov

.github/workflows/main.yml

@@ -0,0 +1,19 @@
+name: Run tests
+on:   
+  pull_request:
+    branches: [ develop ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      MOZ_HEADLESS: 1
+
+    steps:
+    - uses: actions/[email protected]
+      with:
+        fetch-depth: 0
+
+    - name: Setup Python
+      with:
+        python-version: 3.7