[idea] Keymapping for Actions on Navigator

[mistgc]

idea / problem

The actions on Navigator are not configurable.

I am a vim user but I am also a Colemak Layout user.

I wanna the actions on Navigator can be configured.

requested change

Make actions on Navigator configurable instead of hard-coded.

why you want this

To achieve many shortcut key selections for the actions on Navigator.

[mistgc]

repo: https://github.com/mistgc/herdr/tree/feat/navigator-keymapping

According to #2113 , I have made some modifications: enabling actions on the navigator. to be configured.