refactor: Transform CLI script into robust TypeScript client library

[gonzalezfj]

Convert kuma-init from a simple CLI tool into a full-featured TypeScript client library:

Architecture:

• Implement clean layered architecture (services, infrastructure)
• Add comprehensive logging system with multiple levels
• Improve error handling and timeout management
• Add proper TypeScript configurations and type definitions

Features:

• Enhanced monitor creation with configurable defaults
• Robust tag and group management
• Improved CSV parsing with quote handling
• Dry run capability for testing
• Detailed logging with configurable levels
• Socket.IO connection management with timeouts

Testing & Quality:

• Set up Jest testing infrastructure
• Add ESLint configuration
• Implement proper error handling
• Add TypeScript strict mode and proper type checking

This refactor transforms a simple CLI script into a maintainable, production-ready TypeScript library while maintaining the original functionality of initializing Uptime Kuma instances.