Refactor Database to its own folder

src/app.py

@@ -2,8 +2,8 @@ from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from routes import admin_router, score_router, user_router, card_router, movie_router
 
-from models import *
-from lib.database import init_db
+
+from lib.database.database import init_db
 
 
 origins = [