Rendering: Const correct world data prevents Resources updates

[sp0lsh]

Lets say we have code loading skybox panorama into TextureResource in SkyboxWorldComponent.
RenderingDevice then renders Cubemap from it and would update CubemapResource in SkyboxWorldComponent but can't if world is const.

For now we are saving cubemap and rest of such data in renderer once we prerender it at start. It would be nice if tools and resource loaders could use RenderingDevice to preprocess it.

It is worth taking care when we re going to design the life time of asset (raw, game asset, cooked asset, runtime asset). Now we load all assets raw with help of third party libraries and use it in runtime straight away.