[REQUEST] Introduce point rendering for IFC

[pjanck]

Describe the solution you'd like I'd like to render points from IFC the same way points are rendered by the point cloud effect.

Additional context Current implementation fakes a cross:

https://github.com/tumcms/Open-Infra-Platform/blob/eeb7f3b1168eb9cc5224abe84a598d5c870e077a/Core/src/IfcGeometryConverter/RepresentationConverter.h#L530-L550

Example file for testing: https://github.com/buildingSMART/Sample-Test-Files/tree/master/IFC%204.3/Georeferencing_Tiny_Survey_1