feat: Implement LLM configuration validation in create and update routes

- Added `validate_llm_config` function to `llm_service.py` for validating LLM configurations via test API calls.
- Integrated validation in `create_llm_config` and `update_llm_config` routes in `llm_config_routes.py`, raising HTTP exceptions for invalid configurations.
- Enhanced error handling to provide detailed feedback on configuration issues.

surfsense_web/hooks/use-github-stars.ts

@@ -47,6 +47,8 @@ export const useGithubStars = () => {
 		error,
 		compactFormat: Intl.NumberFormat("en-US", {
 			notation: "compact",
+			maximumFractionDigits: 1,
+			minimumFractionDigits: 1,
 		}).format(stars || 0),
 	};
 };