Update WinBinder library with strict types and modern PHP features

The commit modernizes the WinBinder library implementation by:
- Adding strict type declarations to all PHP files
- Improving code documentation with proper PHPDoc blocks
- Refactoring functions to use type hints and return type declarations
- Adding null coalescing operators and other modern PHP features
- Improving error handling and logging
- Restructuring code for better maintainability and readability
- Adding support for Win32 process management through exec() function