[feature request] Add configurable devicon padding

[0x0003]

Is your feature request related to a problem? Please describe.
With narrow fonts (e.g. Iosevka), devicons are located too close to the text, in some cases so close they blend with the letters.

Describe the solution you'd like
A configurable padding/separator option would be nice, either an integer to set the number of spaces, or just a straight up string of characters.

Describe alternatives you've considered
I did find a function that pads icons with one space in utils.lua, but while altering it to print 2+ spaces does provide the desired effect in some pickers (e.g. builtin.find_files), others (e.g. builtin.buffers) are not affected for whatever reason, and I couldn't figure out why.

Additional context

[jamestrew]

This would be such a tedious option to implement for such a niche font preference issue. I can't see us implementing this, at least in the near future.
It'd probably be easier to set up override icons for nvim-web-devicons with extra whitespace appended. Might be possible to do this programmatically.