API and database models refactoring

models/api/base.py

@@ -0,0 +1,16 @@
+from typing import List, TypeVar, Generic
+from pydantic import BaseModel
+
+T = TypeVar('T')
+
+class ListResponse(BaseModel, Generic[T]):
+    """Generic list response model"""
+    items: List[T]
+    total: int
+    skip: int
+    limit: int
+
+class StatusResponse(BaseModel):
+    """Generic status response"""
+    success: bool
+    message: str