FEATURE REQUEST: Add icon source(s)

[Retract1822]

Is your feature request related to a problem? Please describe. I would like to kindly request the integration of allowing more icon sources which I think would really open up this plugin to a lot more customization.

Describe the solution you'd like It would be great to add Self-Hosted Dashboard Icons as an icon source.

Describe alternatives you've considered

• Material Design Icons
• Simple Icons

Additional context Adding all icon sources would be the best as you get more choice