Add auto-testing workflow

.github/workflows/playwright-test.yml

@@ -0,0 +1,56 @@
+name: Playwright Tests
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+jobs:
+  test:
+    timeout-minutes: 60
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '16'
+          cache: 'npm'
+          cache-dependency-path: 'src/frontend/package-lock.json'
+
+      - uses: actions/setup-java@master
+        with:
+          distribution: adopt
+          java-version: 11
+
+      - uses: gradle/gradle-build-action@v2
+        with:
+          arguments: release --scan -Pnpm.download=false -i
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install Playwright Browsers
+        run: npx playwright install --with-deps
+
+      - name: Run Playwright tests
+        run: npx playwright test
+
+      - uses: actions/upload-artifact@v3
+        if: always()
+        with:
+            name: screenshots
+            path: tests/screenshots/
+            retention-days: 30
+
+      - uses: actions/upload-artifact@v3
+        if: always()
+        with:
+          name: playwright-report
+          path: playwright-report/
+          retention-days: 30
+
+      - uses: actions/upload-artifact@v3
+        if: always()
+        with:
+            name: artifacts
+            path: artifacts