fix: 添加 AtActionSheetItem 导出 close #981

Author: Garfield550

types/index.d.ts

@@ -1,7 +1,7 @@
 import { ComponentClass } from 'react'
 import { Props } from '../src/components/calendar/interface'
 
-export { default as AtActionSheet } from './action-sheet'
+export { default as AtActionSheet, AtActionSheetItem } from './action-sheet'
 export { default as AtActivityIndicator } from './activity-indicator'
 export { default as AtAvatar } from './avatar'
 export { default as AtBadge } from './badge'
@@ -53,4 +53,3 @@ export declare const AtCalendar: ComponentClass<Props>
 export declare const AtModalHeader: ComponentClass
 export declare const AtModalAction: ComponentClass
 export declare const AtModalContent: ComponentClass
-