Add E2E test infrastructure for rook plugin

- playwright.config.ts with authenticated test projects
- e2e/auth.setup.ts authenticates via OIDC or token
- e2e/rook.spec.ts smoke tests for sidebar, overview page,
  storage classes navigation, and plugin settings
- scripts/deploy-e2e-headlamp.sh deploys Headlamp + rook in headlamp-dev
- scripts/teardown-e2e-headlamp.sh cleans up after tests
- e2e.yaml uses reusable workflow from .github repo
- @playwright/test ^1.58.2 devDep added

- PRI-640

Co-Authored-By: Paperclip <noreply@paperclip.ing>

package.json

@@ -22,12 +22,15 @@
     "format": "prettier --write src/",
     "format:check": "prettier --check src/",
     "test": "vitest run",
-    "test:watch": "vitest"
+    "test:watch": "vitest",
+    "e2e": "playwright test",
+    "e2e:headed": "playwright test --headed"
   },
   "devDependencies": {
     "@headlamp-k8s/eslint-config": "^0.6.0",
     "@kinvolk/headlamp-plugin": "^0.13.0",
     "@mui/material": "^5.15.14",
+    "@playwright/test": "^1.58.2",
     "@testing-library/jest-dom": "^6.4.8",
     "@testing-library/react": "^16.0.0",
     "@testing-library/user-event": "^14.5.2",