iter(g78): 新增 space 间距容器组件

packages/skin/ui/src/index.ts

@@ -35,6 +35,7 @@ export { rate } from './rate.js';
 export { empty } from './empty.js';
 export { result } from './result.js';
 export { divider } from './divider.js';
+export { space } from './space.js';
 export { list } from './list.js';
 export { carousel } from './carousel.js';
 export { tree } from './tree.js';