feat: improve logging and add optional perf logging (#248)

Mostly minor changes:

- Remove the use of `Console` from server.py. This cascades into other
changes downstream
- Add latency logs behind a `LOG_PERFORMANCE` env var:
  - Add a wrapper for all API calls to measure the latency at API level
- Add detailed performance monitoring to the tool_calling_llm core
`call()` function
- Align the http server (uvicorn) logging pattern with the other logging
calls

Example of perf metrics for tool_calling_llm:

```
2025-01-14 09:41:17.177 INFO     tool_calling_llm.call(TOTAL) 8167ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(get_all_tools_openai_format) +0ms  0ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(start iteration 0) +0ms  0ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(count tokens) +6ms  6ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(llm.completion) +1831ms  1837ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(pre-tool-calls) +0ms  1837ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(tool completed fetch_finding_by_id) +570ms  2407ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(end iteration 0) +0ms  2407ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(start iteration 1) +0ms  2407ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(count tokens) +7ms  2415ms
2025-01-14 09:41:17.177 INFO     	tool_calling_llm.call(llm.completion) +5752ms  8167ms
```

holmes/config.py

@@ -142,12 +142,6 @@ def load_from_env(cls):
             if val is not None:
                 kwargs[field_name] = val
             kwargs["cluster_name"] = Config.__get_cluster_name()
-            try:
-                if os.path.exists(DEFAULT_CONFIG_LOCATION):
-                    logging.info(f"Loading config from file with {len(kwargs)} addional params from env")
-                    return cls.load_from_file(config_file=DEFAULT_CONFIG_LOCATION, **kwargs)
-            except:
-                logging.exception("Failed to load config from secret, falling back to loading config from env vars")
         return cls(**kwargs)
 
     @staticmethod