Refactor project structure, update dependencies, and enhance Playwright configuration

- Updated .gitignore to streamline ignored files.
- Added package-lock.json to manage dependencies more effectively.
- Enhanced package.json with new scripts for linting and testing, and added husky for pre-commit checks.
- Introduced playwright-shared.ts for shared Playwright configuration across examples.
- Removed outdated playwright.config.ts and pnpm-lock.yaml files.
- Updated Angular example configurations to integrate Playwright for end-to-end testing.
- Added new tests for Angular example to ensure proper loading of the viewer and error handling.
- Refactored scripts for installing dependencies and running end-to-end tests.

Author: ritz078

.gitignore

@@ -1,5 +1,5 @@
 node_modules/
-/test-results/
-/playwright-report/
+test-results
+playwright-report
 /blob-report/
-/playwright/.cache/
+playwright/.cache/

.husky/pre-commit

@@ -0,0 +1 @@
+pnpm run lint-staged