Add support for other icon provider with more options

[ogamingSCV]

Is your feature request related to a problem? Please describe.
With the current icon provider, font awesome, the range of icons and brands is very limited.

Describe the solution you'd like
A way to choose the icon provider or a hard coded fall back to have a wider range of icons available.
One provider that I am very happy with in other projects so far is iconify
Iconify icons can be implemented just like with font awesome.

Describe alternatives you've considered
Importing .png files directly is an option, but is considerably more work to do for each icon/app and needs research online, download, sometimes even cropping and upload. And even then these icons are the only one that do not match the HEX colors and do not change on over. Technically works as expected, but is rather annoying to me.

Additional context
I use homer to link to my tech stack which includes a lot of brand logos I'd like to implement.
Here only a few examples where font awesome lacks icons and iconify has them:
Ansible
❌ https://fontawesome.com/search?q=ansible&o=r
✅ https://icon-sets.iconify.design/?query=ansible

Openshift
❌ https://fontawesome.com/search?q=openshift&o=r
✅ https://icon-sets.iconify.design/?query=openshift

Proxmox
❌ https://fontawesome.com/search?q=proxmox&o=r
✅ https://icon-sets.iconify.design/?query=proxmox

Additionally iconify or other provider have more icons in general. Maybe not all "high quality" and in the same art style, but therefor a backup check or option to change it would be very appreciated.