feat: Implement image thumbnail generation, storage, and API endpoints for assets, including a regeneration utility.

api/models/AssetDTO.py

@@ -6,14 +6,14 @@ from pydantic import BaseModel
 from models.Asset import Asset
 
 
-class AssetsResponse(BaseModel):
-    assets: List[Asset]
-    total_count: int
-
-
 class AssetResponse(BaseModel):
     id: str
     name: str
     type: str
     linked_char_id: Optional[str] = None
-    created_at: datetime
+    created_at: datetime
+    url: Optional[str] = None
+
+class AssetsResponse(BaseModel):
+    assets: List[AssetResponse]
+    total_count: int