* Created AbstractMetaState
* Added IAbstractMetaState to NexusDownloader.State
Slideshow is fully working with this setup and nothing changed
functionally.
* Renamed IAbstractMetaState to IMetaState
* Changed modVMs in SlideShow from type NexusDownloader.State to IMetaState
* Simplified IMetaState and ModVM
* Removed Setter from IMetaState and added to LoversLabDownloader
* Throw exception when the modlist could not be loaded
* Created AbstractMetaState
AbstractMetaState implements AbstractDownloadState and indicates that a
State from a specific Download contains meta information. This is used
for the Slideshow and can also be used for the Manifest.
* Created GatherMetaData function
* Implemented new AbstractMetaState for LoversLab
* Implemented new AbstractMetaState for NexusMods
* Replaced Utils.Log with Utils.Error
* Slideshow fixes
* Replaced AbstractMetaState with IMetaState
* Updated CHANGELOG
Co-authored-by: Timothy Baldridge <tbaldridge@gmail.com>
