feat(action): add a github action for codecov

.github/workflows/codecov.yaml

@@ -0,0 +1,25 @@
+name: Codecov
+run-name: Running test files & coverage 🚀
+on: [push, pull_request]
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '16'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Generate code coverage
+        run: npm run coverage
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v3
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}