backend: grouped some api files into directories;
backend main API rewrite in progress...
backend main API rewrite in progress...
Added missing LibraryInfo.
Workspace objets should be able to access their workspace.
Simplified info types.
Redefined basic event for workspace objects existence.
WIP: backend api rewrite.
Added observer priority to EventDispatcher.
Removed priority features in EventDispatcher, because not used yet and I have doubts it will be used.