feat: add codecov to the project

.github/workflows/if-nodejs-pr-testing.yml

@@ -1,4 +1,3 @@
-# It does magic only if there is package.json file in the root of the project
 name: PR testing - if Node project
 
 on:
@@ -60,7 +59,8 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: "${{ steps.nodeversion.outputs.version }}"
-      - name: Install dependencies
+      - if: steps.packagejson.outputs.exists == 'true'
+        name: Install dependencies
         run: npm ci
       - if: steps.packagejson.outputs.exists == 'true'
         name: Test
@@ -72,3 +72,20 @@ jobs:
         name: Run release assets generation to make sure PR does not break it
         shell: bash
         run: npm run generate:assets --if-present
+
+  upload-coverage:
+    name: Upload Coverage to Codecov
+    runs-on: ubuntu-latest
+    needs: test-nodejs-pr
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          fail_ci_if_error: true
+          files: ./coverage/lcov.info
+          flags: unittests
+          name: codecov-umbrella
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true