Implement support for SD.Next

[devils-shadow]

SD.Next is quickly becoming the UI for AI image generation, with tons of features and built-in extensions.
That being said, all this awesomeness tends to break some stuff, especially when it comes to 3rd party extensions.
Civitai Browser + worked fine until them most recent update but now an error is encountered in the console when attempting to do perform any kind of update (model info & tags, model preview) with the ALL tickbox selected.

Based on my layman's non-programmer view, it is related to SD.Next's controlnet folder not being where Civitai Browser + expects it to be (SDN has its own implementation of controlnet)

as a sidenote, I see this message pop up whenever start the SDNext server and was wondering what it meant and if its fine to ignore:

[devils-shadow]

Fixed via #292
seems it wasn't an issue specific to SDnext. Closing this discussion.