[AB-xxx] initial experience leaderboard version

.github/workflows/build.yml

@@ -25,8 +25,18 @@ jobs:
       with:
         distribution: 'corretto'
         java-version: 17
+    - name: Setup node
+      uses: actions/setup-node@v3
+      with:
+        node-version: '21.x'
     - name: Build with Maven
       run: mvn -B install --file abstracto-application/pom.xml
+    - name: Install node dependencies and build
+      working-directory: ./ui/experience-tracking
+      run: npm ci
+    - name: Build ui application
+      working-directory: ./ui/experience-tracking
+      run: npm run build
     - uses: actions/setup-ruby@v1
     - name: Send Webhook Notification
       if: always()