ci/cd: added github actions for test and code coverage

.github/workflows/codecov.yml

@@ -1,11 +1,28 @@
 name: Codecov
-on: [push, pull_request]
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
 jobs:
   run:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - name: Code coverage-reporter
-        uses: tj-actions/coverage-reporter@v5.1
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Node 18
+        uses: actions/setup-node@v3
         with:
-          coverage-command: "nyc --reporter=text mocha --exclude='fixtures' __tests__/*.js"
+          node-version: 18
+      - name: Install dependencies
+        run: npm install
+      - name: Run tests and collect coverage
+        run: npm run test -- --coverage
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          directory: ./
+          files: ./coverage.lcov
+          flags: unittests
+          verbose: true
+          fail_ci_if_error: true