[Feature]: Better Support changing the baked model on a layer and that layer have animations

### Mod Version

all

### Minecraft Version

all

### Feature summary

Currently being poked at by @JayZX535 for their mod, will need to make an example for testing here: https://github.com/AzureDoom/Azurelib-Rewrite-Examples

### Motivation and context

Allows more custom entities

### Proposed solution or design

N/A

### Alternatives considered

N/A

### Additional context

N/A