Implement Sprite and LOD rendering in 3d preview

[SMLiberator]

I don't think there's any original levels that use this, but Sprite objects can actually be placed as things in level creation, but they won't appear correctly in 3D preview, instead being drawn as a default cube like a ghost object with no 3do would.

Likewise, I think it would be useful for LOD models to appear in 3D preview as it could both help visualize LOD distance settings and could bump framerates in extreme scenarios.

[smlu]

Rendering sprite things is on the todo list, as infernal machine game uses sprites extensively and I think it would be really useful in terms of level editing.
Just for reference the code needed for rendering correct position and orientation of sprite based on sprite type: https://github.com/smlu/OpenJones3D/blob/main/Libs/rdroid/Primitives/rdSprite.c#L168-L288
For JKDF2 & MOTS double check if same code can be applied.

As for dynamic LOD it could probably be implemented since the rendering from camera is implemented.
Infernal machine doesn't use this feature and OpenJKDF2 code should be taken as reference.