Introduce Loguru for enhanced debugging and logging

- Replaced standard print statements with Loguru-based logging for better log management.
- Added configurable logging depending on debug mode (normal or detailed).
- Enhanced error handling with detailed logging in key functions like `ask_question`, `get_api_key_from_context`, and `search_code`.
- Improved logging in application lifecycle, including HTTP client setup, request handling, and response processing.

Author: rodion-m

pyproject.toml

@@ -8,6 +8,7 @@ dependencies = [
     "fastmcp>=2.0.0",
     "httpx>=0.26.0",
     "python-dotenv>=1.0.0",
+    "loguru>=0.7.0",
 ]
 
 [project.scripts]
@@ -19,4 +20,4 @@ build-backend = "setuptools.build_meta"
 
 [tool.setuptools]
 packages = ["src"]
-package-dir = {"" = "."} 
+package-dir = {"" = "."}