feat(yazi): Add assertion to prevent conflicting keybinds

[lordkekz]

Description

Right now, you can accidentally define conflicting keybinds and you will not get any warning.
This PR adds an assertion which checks if there are any two keybinds A and B where the on value (sequence of keypresses) of A starts with the on value of B.

This is not yet finished but I will pick it up when I have time again.

The new assertions produce error messages like this:

There are conflicting keybinds in: `programs.yazi.keymap.input`
┢ Conflict between:
┃ {"on":["<Esc>"],"run":"escape"}
┃ {"on":["<Esc>"],"run":"backspace"}


--
There are conflicting keybinds in: `programs.yazi.keymap.manager`
┢ Conflict between:
┃ {"on":["c","d","e"],"run":"something"}
┃ {"on":["c","d"],"run":"somethingelse"}
│
┢ Conflict between:
┃ {"on":["q"],"run":"escape"}
┃ {"on":["q"],"run":"quit"}

Caveats

• For now, it only checks for conflicts of keybinds which are defined in the home-manager config. It does not check for conflicts with yazi's default keymap.
  • The latter is theoretically possible e.g. by parsing the default keymap.toml (would require IFD) or by maintining a Nix-language version of it.
  • If checks with default bindings get added, it would be important to indicate them as such (and ignore overriding the defaults).
• I would be nice to be able to print the definition location of each keybind, i.e. the home-manager module that added it to the list, but I'm not sure how to do that easily.

Checklist

• Change is backwards compatible.

• Code formatted with ./format.

• Code tested through nix-shell --pure tests -A run.all or nix develop --ignore-environment .#all using Flakes.

• Test cases updated/added. See example.

Maintainer CC

@XYenon @eljamm
btw would you be interested in me becoming a maintainer of the yazi module?
This is my second contribution to this module and I am also maintaining the nix-yazi-plugins repo (not afiliated with yazi or home-manager but relevant IMO), so I plan to keep contributing here in the forseeable future.