Add type_key to UpdateObjectRequest interface for future form support

Author: jmetrikat

src/models/object.ts

@@ -27,6 +27,7 @@ export interface CreateObjectRequest {
 export interface UpdateObjectRequest {
   name?: string;
   icon?: ObjectIcon;
+  type_key?: string; // TODO: add support in forms
   properties?: PropertyLinkWithValue[];
 }