Transfer希望支持内部字段排序（右边框）

[s641135196]

What problem does this feature solve?

在Excel导出的表列应该与自定义的列的顺序相同。

What does the proposed API look like?

无要求。 能实现功能即可。 能实现上下拖动或者有按钮能让字段上下移动都可以。

[ng-zorro-bot]

Translation of this issue:

---

Transfer wants to support internal field sorting (right border)

What problem does this feature solve?

The table columns exported in Excel should be in the same order as the custom columns.

What does the proposed API look like?

no request. Can achieve the function. Can be dragged up and down or have buttons to move the field up and down.

[wenqi73]

Duplicate of #2870

[hukaixuan2017]

这个建议是修改还是不修改？穿梭框左侧和右侧排序还是很实用的功能