refactor: major project restructuring and configuration improvements

- Completely redesigned project architecture with modular server components
- Introduced TOML-based configuration system
- Updated CLI options to use configuration file
- Enhanced proxy server with more robust authentication and host filtering
- Migrated to newer Rust dependencies and improved error handling
- Added tracing for better logging and debugging
- Simplified server startup and connection management

.gitignore

@@ -1,5 +1,3 @@
 /target
-README-PRIVATE.md
-README-RU.md
-cloud-init.yml
-*.pem
+/certs
+config.dev.toml