Adjust pawn BP hierarchy
requested to merge vr-vis/VR-Group/unreal-development/david.gilbert/rwth-vr-toolkit:feature/default_pawn into dev/5.3
refactor(pawn): Changes pawn hierarchy a bit: Base pawn is just a BP class of the C++ Pawn, whereas Default pawn also brings nav/interaction
Closes #641
Edited by David Gilbert