🔧 ci: add codecov yml

Author: gleisonkz

.github/workflows/codecov.yml

@@ -0,0 +1,37 @@
+name: Running Code Coverage
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x, 13.x, 14.x, 15.x]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+
+      - name: Set up Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run tests
+        run: npm run coverage
+
+      - name: Upload coverage to Codecov
+      - uses: codecov/codecov-action@v2
+        with:
+          directory: ./coverage
+          files: ./cobertura-coverage.xml
+          name: codecov-umbrella # optional
+          fail_ci_if_error: true
+          verbose: true # optional (default = false)