feat: a pin component

src/components/index.ts

@@ -2,6 +2,7 @@
 import './dice';
 import './table';
 import './md-link';
+import './md-pin';
 
 // 导出组件
 export { Article } from './Article';
@@ -12,5 +13,4 @@ export { FileTreeNode, HeadingNode } from './FileTree';
 
 // 导出数据类型
 export type { DiceProps } from './dice';
-export type { TableProps } from './table';
-
+export type { TableProps } from './table';