option to override custom keybinds and remap default ones

[pirafrank]

Is your feature request related to a problem? Please describe. It is not possible to create custom keybinds tied to the same keys as default keybinds. As such, the user does not have control over all options and can only use those free listed in docs/Custom_keybinds.md.

Describe the solution you'd like Custom keybinds override any existing default one. User can remap a default keybind to something else.

Describe alternatives you've considered There's no way other than use free keybinds for custom actions.

[jesseduffield]

I'm in favour of this.

[crokobit]

I need this too. I've mapped c-j c-k to switch Tmux pane already...

[NiamhFerns]

Absolutely need this. For those not using QWERTY keyboards especially, not having full control of bindings is incredibly frustrating.

It's not a small thing to overlook.