fix: 网页版增加对话图片支持

Yi.Ai.Vue3/src/api/index.ts

@@ -1,6 +1,7 @@
 export * from './announcement'
 export * from './auth';
 export * from './chat';
+export * from './file';
 export * from './model';
 export * from './pay';
 export * from './session';