refactor image grabbing

[KevinSchildhorn]

Image loading was originally developed with individual pulls in mind, however now that coil is added to the project we should re-factor how well grab image data so that it's more streamlined.

[KevinSchildhorn]

See notes here

1. It doesn't make sense in my mind why you can't use SourceFetchResult for both Android and Desktop.
2. The ImageDirectory doesn't necessarily need the val image: SharedImage?
3. The Image only needs the path to work, there's no need to add the entire NetworkDirectoryDetails.
4. There doesn't really seem to be a need to have two fetchers? In theory As long as you have the path to the image then that should be all you need.
5. There are a lot of UseCases and other classes that could probably be taken out.