feature: customization of keymaps support?

[Jaehaks]

Did you check the docs?

• [X] I have read all the docs

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

I cannot use some features using default keymaps in normal mode / commit messages because I use the keymaps for other purpose, like <CR>, <C-CR>, j, k etc If the keymaps can be customizable, it could be better to use.

Describe the solution you'd like

I think 2 ways to solve

1. show customizable setting in setup function
2. reset all keymaps locally in fugit window

Describe alternatives you've considered

I described above

Additional context

No response