feature: remove + character in description

[onexbash]

Did you check the docs?

• I have read all the which-key.nvim docs

Is your feature request related to a problem? Please describe.

I want to customize the icons & names of my keymap groups, which works perfectly by using wk.add({"lhs", group, icon}) but I cant figure out how to get rid of the + character that is automatically added if the keymap is a group.
See screenshot:

Describe the solution you'd like

An additional prop that can be passed to wk.add() to disable the auto-adding of this character.

Describe alternatives you've considered

tried to modify the desc = {} rules but it didnt work.

Additional context

[will-rigney]

You can customise the prepended character using the opts.icons.group parameter, setting it to "" if you like, as documented in https://github.com/folke/which-key.nvim/blob/bfec3d6bc0a9b0b2cb11644642f78c2c3915eef0/lua/which-key/config.lua

Just found the option myself and thought it might help your use case, please disregard if not. Having the option to inconsistently style individual groups might be helpful to someone in any case.

[chris4prez]

I think the plus key is relevant and how the wk.add group should act/present similar to the defaults view for keymaps. (I came here to open an enhancement/bug on that)

Where I believe there is a challenge is we are missing the number of relevant keymaps in the group, as well as a space between +X and groupname.

i.e. if you look at your screenshot for s or t it shows +5 keymaps. When defining a groupname I think it should present as "icon +X Groupname" where +X denotes how many mappings exist under the key similar to the default manner. Having it present as +groupname is not consistent with how defaults are defined.

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