Allow Weather Icon Packs for Widget

[dgcampbe]

AFAIK, this is not currently possible to apply icons packs for the icons in the weather widget. Breezy Weather icon packs would be great for this. It 's not a high priority thing, but would be neat. I am willing to try working on this. Here is a relevant discussion about adding Breezy Weather icon pack support to other apps: https://github.com/breezy-weather/breezy-weather/discussions/602