Refactor high-level renderer #193
Description
- Ensure that renderer system is not using mesh/material/texture resource directly.
- Move the high-level renderer code to another project (e.g. nfRenderer):
- nfCore/Renderer/ can be just moved
- RendererSystem must be split into RenderSystem (wrapper for HL-renderer) and RenderScene (or something)
- Create "Demo" application for testing high-level features without nfCore (lights, shadows, meshes, post-process, etc.)
- Ideally, low-level renderer (backend) interface should not be visible by the nfCore/demo app.
The biggest problem will be to extract code from RendererSystem and View classes