Feature Request: Implement Github CI/CD  #414

I propose adding automated testing for crawl4ai using a predefined URL list for CI/CD verification. This would help ensure the stability of core functionalities.

Initial test coverage could focus on:

1. Website crawling
2. Web page content parsing
3. Web page screenshots

Having these automated tests in the CI/CD pipeline would help maintain code reliability and catch potential issues early in the development process.

This testing framework would serve as a foundation for ensuring consistent crawler behavior across different environments and code changes.