Fix PR review: remove unused imports and wildcard import

- Remove unused 'import os' from csharp/analyzer.py
- Replace 'from ...entities import *' with explicit imports
- Remove unused 'from pathlib import Path' from test_csharp_analyzer.py

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: gkorland

api/analyzers/csharp/analyzer.py

@@ -1,9 +1,9 @@
-import os
 import subprocess
 from pathlib import Path
 
 from multilspy import SyncLanguageServer
-from ...entities import *
+from ...entities.entity import Entity
+from ...entities.file import File
 from typing import Optional
 from ..analyzer import AbstractAnalyzer
 

tests/test_csharp_analyzer.py

@@ -1,6 +1,5 @@
 import os
 import unittest
-from pathlib import Path
 
 from api import SourceAnalyzer, Graph