add all frontend files

node_modules/rc-table/es/ColGroup.d.ts

@@ -0,0 +1,9 @@
+import * as React from 'react';
+import type { ColumnType } from './interface';
+export interface ColGroupProps<RecordType> {
+    colWidths: readonly (number | string)[];
+    columns?: readonly ColumnType<RecordType>[];
+    columCount?: number;
+}
+declare function ColGroup<RecordType>({ colWidths, columns, columCount }: ColGroupProps<RecordType>): React.JSX.Element;
+export default ColGroup;