Pseudo keyboard mapping mode while debugging

[nosami]

Feature category

• Check(Type 'x') any that Applicable item:
  • Vim
  • Vim plugin

Is your feature request related to a problem? Please describe.
I would like to be able to assign keyboard shortcuts that only apply when debugging code. E.g. 'b' to toggle a breakpoint instead of move backwords word.

Describe the solution you'd like
I would like a pseudo mapping mode, e.g. dmap and dnoremap where the map is only effective while debugging.

Describe alternatives you've considered
I'm currently prefacing my debug commands with an s which I rarely use in normal mode,
e.g nmap sb :vsc Debug.ToggleBreakpoint<CR>

Note:
Please refer to the following. The goals of this project are written.
https://github.com/VsVim/VsVim/blob/master/Documentation/Project%20Goals.md