Feature/add emoji (#103)

web/models/datasets.ts

@@ -3,6 +3,8 @@ import { AppMode } from './app'
 export type DataSet = {
   id: string
   name: string
+  icon: string
+  icon_background: string
   description: string
   permission: 'only_me' | 'all_team_members'
   data_source_type: 'upload_file'

web/models/share.ts

@@ -11,6 +11,8 @@ export type ConversationItem = {
 
 export type SiteInfo = {
   title: string
+  icon: string
+  icon_background: string
   description: string
   default_language: Locale
   prompt_public: boolean