build(codecov): add codecov section (#94)

Author: jaebradley

.github/workflows/workflows.yaml

@@ -44,6 +44,22 @@ jobs:
         run: npm run build
       - name: Check That Build Is ES5 Compatible
         run: npm run is-build-es5
+  coverage:
+    name: Code Coverage
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.ref }}
+      - name: Setup Node
+        uses: actions/setup-node@v1
+      - name: Install dependencies
+        run: npm ci
+      - name: Run Tests
+        run: npm run test
+      - name: Codecov
+        uses: codecov/codecov-action@v1
   release:
     name: Release
     runs-on: ubuntu-latest