Added and fixed Create auction API endpoint. Added middleware, session-based authentication and logout endpoint

app/models.py

@@ -3,7 +3,7 @@ from sqlalchemy.orm import relationship
 from sqlalchemy.ext.declarative import as_declarative, declared_attr
 from sqlalchemy.sql import func
 from pydantic import BaseModel
-from typing import Optional
+from typing import Optional, List
 
 @as_declarative()
 class Base:
@@ -167,4 +167,26 @@ class UserCreate(BaseModel):
 
 class UserLogin(BaseModel):
     email: str
-    password: str
+    password: str
+
+class VehicleCreate(BaseModel):
+    brand: str
+    model: str
+    variant: Optional[str]
+    year: int
+    kilometers: int
+    condition: str
+    location: str
+    latitude: Optional[float]
+    longitude: Optional[float]
+    gasType: str
+    images: str
+    description: str
+    service: str
+    inspectedAt: Optional[str]  # ISO format for datetime
+    equipment_ids: List[int]  # List of equipment IDs
+
+class AuctionCreate(BaseModel):
+    askingPrice: float
+    description: Optional[str]
+    vehicle: VehicleCreate