Support cancel removing store

[mayjiang0203]

trafficstars

Feature Request

Since pd support cancel during removing store, hope tools can support it also. https://github.com/pingcap/docs-cn/pull/9595

Is your feature request related to a problem? Please describe:

Describe the feature you'd like:

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

[mayjiang0203]

/assign @DanielZhangQD

[mikechengwei]

Do you mean that the operator needs to support some tasks which wrap some operations of pd-ctl?