Interactive rebase

**Is your feature request related to a problem? Please describe.**
I'm also using Fork, and the sudden change of policy doesn't really suit me so I was looking for an alternative. The feature I use the most was interactive rebase so here is my feature request :)

**Describe the solution you'd like**
Ability to have a list of commit that I can act upon (squash, reword etc…)

**Describe alternatives you've considered**
I'm not really good at git CLI, always used a UI so if gitui could become a fully featured Git UI, that would be awesome.

该 issue 未指定任何文件、测试或入口点。首先定位 gitui 现有的 commit-list UI 和 Git integration，然后将请求的 squash 和 reword 操作与 Git 的 interactive rebase 行为进行比较；当用户可以选择提交并通过 terminal UI 执行这些操作时，即视为完成。

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