vue-virtualized-table-booway/src/ColumnGroup.jsx

The second version of implementation of `vue-virtual-table` component, it was inspired from [rc-table](https://github.com/react-component/table) and [ant-table](https://ant.design/components/table), API design is 60%+ consistent. Or you could think I tran

/* Forked from ant-design-vue 💖 */
/* eslint-disable vue/require-default-prop */
export default {
  name: "TableColumnGroup",
  props: {
    title: {
      type: String,
      default: "",
    },
  },
  isTableColumnGroup: true,
  __TABLE_COLUMN_GROUP: true,
}