Scene Management

[IgorAlexey]

A Scene track entities and how they evolve over time, it makes sense to couple this functionality with Asset loading and lifetime.

Scene:

• Serialization/Loading

Assets:
We need to store Textures, Meshes, Audio in an ID-based library:

• Load and cache the assets
• Retrieve the asset given it's ID. (The user needs to keep track of the type)
• Cross-referencing assets (e.g., a glTF model might break up into into mesh, textures, and materials, etc. They need to reference each other.)