Assets no longer have resource ids, Fixed examples for the new asset format
[VERSION] v0.156.0-dev
Merge pull request #40 from playcanvas/feature/asset-migration

Assets no longer have resource ids, Fixed examples for the new asset format
Use a TextureRequest for skybox textures instead of ImageRequests so that they can be cached correctly and used by other assets like materials without issues
Added textured cube to examples.
[RELEASE] v0.156.0