[REQUEST] Ability to select random icon

[ash-sykes]

Is your feature request related to a problem? Please describe.
Ability to set an unassociated custom icon. Is there a way to pick a custom icon for an application where the icon pack does not contain an alternative icon for the selected application.

Describe the solution you'd like
Add the ability to select any custom icon

Describe alternatives you've considered
N/A

Additional context