Permission model

Add a model for managing permissions (power levels) in rooms. This gets rid of a whole bunch of boiler plate in NeoChat and as a bonus makes it easy to add a feature to allow setting the permission level for any event.

src/CMakeLists.txt

@@ -181,6 +181,10 @@ add_library(neochat STATIC
     jobs/neochatadd3pidjob.h
     identityserverhelper.cpp
     identityserverhelper.h
+    enums/powerlevel.cpp
+    enums/powerlevel.h
+    models/permissionsmodel.cpp
+    models/permissionsmodel.h
 )
 
 set_source_files_properties(qml/OsmLocationPlugin.qml PROPERTIES