feat: add models and enum

itd/models/file.py

@@ -0,0 +1,10 @@
+from uuid import UUID
+
+from pydantic import BaseModel, Field
+
+class File(BaseModel):
+    id: UUID
+    url: str
+    filename: str
+    mime_type: str = Field('image/png', alias='mimeType')
+    size: int