refactor: reorganize all components (#8303)

src/cell-group/CellGroup.tsx

@@ -1,9 +1,12 @@
+import { defineComponent } from 'vue';
 import { createNamespace } from '../utils';
 import { BORDER_TOP_BOTTOM } from '../utils/constant';
 
-const [createComponent, bem] = createNamespace('cell-group');
+const [name, bem] = createNamespace('cell-group');
+
+export default defineComponent({
+  name,
 
-export default createComponent({
   inheritAttrs: false,
 
   props: {

src/cell-group/index.ts

@@ -0,0 +1,7 @@
+import { installable } from '../utils';
+import _CellGroup from './CellGroup';
+
+const CellGroup = installable(_CellGroup);
+
+export default CellGroup;
+export { CellGroup };