refactor: Standardize formatting in README.md for improved readability

refactor: Enhance summary table formatting and alert display logic for improved clarity

refactor: Update LLMAnalyzer URL configuration to use api_base_url for improved clarity

refactor: Enhance user experience with rich console output and add diagnostics script for Pi-hole connection testing

refactor: Simplify configuration loading by removing LLMConfig from environment and using factory pattern for LLMAnalyzer

refactor: Update .env.example to include additional LLM provider configuration options

refactor: Update README to reflect factory pattern implementation for LLM integration

refactor: Remove example_integrated.py script to streamline project structure

refactor: Improve LLM provider factory and enhance error handling in providers

feat: Implement LLM provider architecture for Pi-hole Analytics

docs: Remove Changelog section and note from README.md for clarity

refactor(models): Make DNSQuery dataclass immutable and enhance client IP extraction logic

refactor(tests): Update Pi-hole test script to use environment variables for configuration and streamline endpoint testing

feat(tests): Add test script for Pi-hole authentication and functionality verification

docs: Update README.md to reflect new integrated architecture, add performance characteristics, and enhance usage examples