fix: Fixed API Token "Created On" date (#1909)

* exposed created_at on token schema

* fixed token createdAt reference

* made created_at optional for compatibility

mealie/schema/user/user.py

@@ -29,6 +29,7 @@ class LongLiveTokenOut(MealieModel):
     token: str
     name: str
     id: int
+    created_at: datetime | None
 
     class Config:
         orm_mode = True