feat(asset): enhance asset handling by adding storageKey and updating upload functions

widget/lib/services/types.ts

@@ -60,6 +60,7 @@ export type WidgetAsset = {
   id: number;
   assetId: string;
   provider: string;
+  storageKey: string;
   filename: string;
   fileSize: number;
   mimeType: string;