reference.json component.
Adds REFERENCE_PREFIX to GameAssets.
Adds ReferenceComponent and ReferenceProcessor.
GameStructure ~> ModelStructure. Adds library structure to ModelStructure and default library folder.
Adds Controller to ProjectUtils. Implroves Q and WidgetBuilder statics initialization.
Adds CopyToLibraryEntityResources worker.
Add RepoElementReference action.
RepoTile and SearchGallery changes to import downloaded elements to the library.
Removes uneeded attributes from GameAssets.
Adds LibraryManager to the Controller.
CopyToLibraryEntityResources ~> CopyToLibraryWorker.
Merge pull request #923 from RotaruDan/library

Library