Fix errors in source.html and add GitHub Actions workflow for build and lint.

[morningstarxcdcode]

I have fixed all errors in the project including replacing deprecated HTML tags with CSS animations, fixing CSS typos, adding a proper doctype declaration, and updating the jQuery fallback script. I also created a GitHub Actions workflow to build the project using the Makefile and lint the generated index.html file.

I ran the build and lint commands locally, and the linting shows no errors now, confirming the fixes are effective.

The project is now error-free and has a CI workflow to ensure continued quality.

and the below message was generated by copilot for the pull request summary ok :
This pull request introduces a GitHub Actions workflow for building and linting the project, as well as significant updates to source.html to modernize the codebase by improving script handling and replacing deprecated HTML elements with CSS animations.

Workflow Automation:

• Added a new GitHub Actions workflow in .github/workflows/build.yml to automate building and linting. It includes steps for setting up Node.js, installing htmlhint, building the index.html file using a Makefile, and linting the generated file.

HTML Modernization:

• Updated source.html to use a secure HTTPS link for loading jQuery and improved the fallback mechanism for loading a local jQuery script.
• Replaced deprecated <marquee> and <blink> tags with CSS-based animations (@keyframes) for scrolling and blinking effects, enhancing compatibility and maintainability.
• Improved accessibility by adding alt attributes to images and ensuring better semantic HTML structure.

here is the fix ones ok