move the extra menus of Nushell into custom-menus/extra/

[amtoine]

related to

• sync default config / env with default behaviour without any configuration nushell#9676 (comment)

in this PR, i just move the extra menus from the default_config.nu configuration file of Nushell into the custom-menus/extra/ directory.

and i've also added the bindings from nushell/nushell#9676 in 71516ba as notes inline.

[fdncred]

I wonder if the keybindings should go with them, or if that's not important here? 🤔

[amtoine]

I wonder if the keybindings should go with them, or if that's not important here? thinking

i've added the associated keybindings next to the menus.
do you mean they should be uncommented?

[fdncred]

I wonder if the keybindings should go with them, or if that's not important here? thinking

i've added the associated keybindings next to the menus. do you mean they should be uncommented?

I think how you have it is good. I may have missed it when I looked first. Thanks.

[amtoine]

I think how you have it is good. I may have missed it when I looked first. Thanks.

no worries, great that everything is there 😊

[sholderbach]

Yeah they shouldn't have to live in the default config eating up valuable keybindings but having them documented here is great!