Homelab Icons (di:) no longer work due to third party maintenance failure

[2q2code]

Description

This is more of a bug for me to fix when I get a moment. A short while ago, the cdn url for homelab icons started returning nothing but an error (over quota or something). I checked the main repo and it seems that it has been taken over by homarr with promise to maintain (ahem) existing functionality. I have since found two more awesome self-hosted icon sources, and I'd like to add them in eventually.

The first is iconify.design, which allows you to choose from hundreds of icon sets, then has a feature to theme them by choosing the icon fill colour! This seemed quite promising and related to the brand fill-colour feature I suggested from SimpleIcons.

The second is a little less intensive, but plentiful in ready-to-go self-hosted icons, at selfh.st/icons, which, by-the-way, is also home to a lovely, modern, UI for the most excellent awesome-selfhosted collection.

[svilenmarkov]

Hey, I'll fix the URL for dashboard icons with the next release. As for selfh.st icons, they were alreay added in v0.7.0.