feat: custom app icon (#7196)

Co-authored-by: crazywoola <427733928@qq.com>

web/models/share.ts

@@ -1,4 +1,5 @@
 import type { Locale } from '@/i18n'
+import type { AppIconType } from '@/types/app'
 
 export type ResponseHolder = {}
 
@@ -13,8 +14,10 @@ export type SiteInfo = {
   title: string
   chat_color_theme?: string
   chat_color_theme_inverted?: boolean
+  icon_type?: AppIconType
   icon?: string
   icon_background?: string
+  icon_url?: string
   description?: string
   default_language?: Locale
   prompt_public?: boolean