Investigation how to wrap around CoreData for UI updates, to use a custom solution behind it

[BPerlakiH]

As discussed we need to bridge down to C++, but keep the existing "dynamic" update of the applications, as data changes.
There needs to be some investigation first what would be the most efficient way to do this that:

• can be used in a generic way (ideally regardless of the data type)
• can update the UI in a similar manner as the current Core Data solution, which is based on background context update, and view context display
• can be done in a Swift-y way, so other developers can easily understand how to use it (eg. based on similar annotations to CoreData).