Refactor and enhance website with Java tutorials for Javaisitc v2 - #722

- Add initial documentation pages: Hello World and Components.
- Configure Next.js with MDX support for documentation.
- Set up global styles using Tailwind CSS and Fumadocs UI.
- Implement layout components for home and documentation pages.
- Create API route for search functionality.
- Define source configuration for documentation pages.
- Add TypeScript configuration for improved type safety.

…or import styles

Migrate site layout and update dependencies

…this keyword, variables and literals, and primitive data types; remove obsolete test file; implement while and do...while loop examples

…ure; enhance resource descriptions and formatting

…rity

…tProps and improve theme switching

Add comprehensive Java tutorials and improve documentation structure

…lication, and interest calculations with detailed documentation

Add Java programs and documentation layout