工具栏显示选中文件的数量

[SingleRottenChips]

Please make sure of the following things

• I have read the documentation.
• I'm sure there are no duplicate issues or discussions.
• I'm sure this feature is not implemented.
• I'm sure it's a reasonable and popular requirement.

Description of the feature / 需求描述

选中文件时能在工具栏显示选中的数量

（因为文件比较多，已经不小心选中误删了三次了... 尽管几乎每次删除前都会确认是否有选多，或者取消选择再次选择以确保没有选错，但还是难免会出现误删的情况）

Suggested solution / 实现思路

No response

Additional context / 附件

No response

[asforest]

+1，多选时确实需要一个文件数量的显示，统计一下目录内有多少个文件也会很方便

[zfhxi]

+1