fix(api): Fix toolbox functions to work if items are deepcopied

[mrjones2014]

Resolves: #437

How to Test

Follow reproduction steps described in issue.

Testing for Regressions

I have tested the following:

• Triggering keymaps from legendary.nvim in all modes (normal, insert, visual)
• Creating keymaps via legendary.nvim, then triggering via the keymap in all modes (normal, insert, visual)
• Triggering commands from legendary.nvim in all modes (normal, insert, visual)
• Creating commands via legendary.nvim, then running the command manually from the command line
• augroup/autocmds created through legendary.nvim work correctly

[mrjones2014]

@towry can you verify this fixes it for you?

[towry]

@towry can you verify this fixes it for you?

Thanks for the quick fix, I will test it once I get to the workplace.

[towry]

It works great, thanks again!