Changes

Move armor models to being handled by JSON instead of constructor parameters

Means we no longer need the material armor model (dynamic length materials) as you can easily change the length yourself via JSON (we expect that much from the item models)
Also means we can detect during construction if a texture exists and skip the layer if not, notably used
Rename a lot of name keys to prefix to make their behavior more clear

Add a default color to the dyed texture supplier

If set, modifier goes into "always render" mode and will use the default color for a tint