Proposal: refactor property API

ParaView properties are a core part of ParaView remoting infrastructure. The properties i.e vtkSMProperty subclasses themselves are quite dated. We should be able to implement a nicer/easier to use property subsystem using modern C++ constructs. This issue is being created to discuss ideas, survey implementations by other projects etc.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information