♻️ Edit refactor db models to use UUID's instead of integer ID's (#1259)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

backend/app/crud.py

@@ -1,3 +1,4 @@
+import uuid
 from typing import Any
 
 from sqlmodel import Session, select
@@ -45,7 +46,7 @@ def authenticate(*, session: Session, email: str, password: str) -> User | None:
     return db_user
 
 
-def create_item(*, session: Session, item_in: ItemCreate, owner_id: int) -> Item:
+def create_item(*, session: Session, item_in: ItemCreate, owner_id: uuid.UUID) -> Item:
     db_item = Item.model_validate(item_in, update={"owner_id": owner_id})
     session.add(db_item)
     session.commit()