Add player model rendering

[temportalflux]

Its time to give the player a body. Now that model assets exist, add a renderer (which will eventually be used for all entity models) which is given a pipeline and model asset. The vertex and index buffers for the model can be written to GPU and the renderer can render just the 1 model for now. Will also probably need an instance buffer for the location of the player (and eventually any entity). This instance buffer should contain a chunk-model transformation matrix which shifts the model to the provided chunk when applying the transformation matrix for a given vertex.

[temportalflux]

Systematic notes:

• Animated entities cannot share the same model vertex buffer, as the vertices need to be reuploaded to GPU when a model animates (changes vertex position).
• Entities with the same model (regardless of if animated) can share the same index buffer.
• Entities can share descriptor sets so long as they use the same material. These sets can be created at startup. Each set will need the chunkCamera uniform and the image-sampler for its texture(s).