feat: implement advanced reward management and wheel customization

- Add customizable background color
- Add wheel animations and sound effects
- Add reward description field and winner modal
- Change font to Dana
- Add configurable reward probabilities
- Support reward types (Empty, Discount Code, LiveCoin)
- Replace reward title with reward type selector
- Allow wheel page title customization from admin panel

backend/schemas.py

@@ -1,20 +1,27 @@
 from pydantic import BaseModel
-
+from typing import Optional
 
 class ItemCreate(BaseModel):
     title: str
-    value: int
-
+    prize: str
+    description: Optional[str] = ""
+    prize_type: str = "پوچ"
+    probability: float = 1.0
 
 class ItemUpdate(BaseModel):
     title: str
-    value: int
-
+    prize: str
+    description: Optional[str] = ""
+    prize_type: str = "پوچ"
+    probability: float = 1.0
 
 class ItemResponse(BaseModel):
     id: int
     title: str
-    value: int
+    prize: str
+    description: Optional[str] = ""
+    prize_type: str
+    probability: float
 
     class Config:
         from_attributes = True