use Python package approach to project structure

tests/api/controller.py

@@ -1,11 +1,6 @@
 import json
-import os
-import sys
 
-# Add the parent folder (or any relative path)
-sys.path.append(os.path.abspath('./../llm'))
-
-from phi3_language_model import Phi3LanguageModel
+from tests.llm.phi3_language_model import Phi3LanguageModel
 
 
 class ApiController:

tests/api/server.py

@@ -1,6 +1,6 @@
 import json
 
-from controller import ApiController
+from tests.api.controller import ApiController
 from wsgiref.simple_server import make_server