Added a test pattern image and added support to toggle between test pattern and media video texture for display on the dome surface.

Added Media Player and Media Sound component to DomeDisplayBP. Space starts playing movie. No movies embedded in project yet (do not have rights to embed current test movie)

Implemented DomeDisplayComponent that uses ProceduralMeshComponent to produce a Dome Mesh with UV-mapping. Also added materials for the dome display, still a test texture and no video. Tangents are yet not computed for the vertices, might need to create multiple points at the top to get proper tangents.