add files in the conversation[id] api (#1300)

Co-authored-by: Kevin CATHALY <[email protected]>

src/routes/api/conversation/[id]/+server.ts

@@ -27,6 +27,7 @@ export async function GET({ locals, params }) {
 					createdAt: message.createdAt,
 					updatedAt: message.updatedAt,
 					webSearch: message.webSearch,
+					files: message.files,
 				})),
 			};
 			return Response.json(res);