AST-43499 add codecov workflow

.github/workflows/codecov.yaml

@@ -0,0 +1,34 @@
+name: codecov scan
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4.1.0
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: 22.11.0
+    - name: Authenticate with GitHub package registry
+      run: echo "//npm.pkg.github.com/:_authToken=${{ secrets.GITHUB_TOKEN }}" > ~/.npmrc
+    - name: Install dependencies
+      run: npm install
+    - name: Run unit tests with coverage
+      run: npm run unit-coverage
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@1e68e06f1dbfde0e4cefc87efeba9e4643565303 # v5.1.2
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }} # create your CODECOV_TOKEN using the token from 'set repo' in codecov site
+        flags: target=auto
+        fail_ci_if_error: true
+        verbose: false