remove unused imports from routerification and fix dotenv issue

api/src/db.py

@@ -5,7 +5,7 @@
 from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
 from sqlalchemy.ext.declarative import declarative_base
 
-load_dotenv()
+load_dotenv(override=True)
 
 connect_args = {}
 

api/src/dependencies.py

@@ -0,0 +1,15 @@
+from fastapi import Depends
+from .db import SessionLocal
+from sqlalchemy.ext.asyncio import AsyncSession
+
+
+async def get_db():
+    """FastAPI Dependency Generator for Database"""
+    db: AsyncSession = SessionLocal()
+    try:
+        yield db
+    finally:
+        await db.close()
+
+
+db: AsyncSession = Depends(get_db)