feature: disable icons

[chrisands]

trafficstars

Did you check the docs?

• [X] I have read all the trouble.nvim docs

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

Ability to disable icons since v2 allowed to do it

Describe the solution you'd like

For example set in config empty dictionary

icons = {}

Describe alternatives you've considered

Additional context

v2 allows to disable icons using icons = false