Create: Steam 'n' Rails

Steam 'n' Rails 1.6.4:

Additions:

• Custom icons for narrow/wide gauge track items (vanilla wood tracks only) (Thanks Adeline!!)
• Animated flywheels: Flywheels will now move when apart of a train (configurable by clients)

Fixes

• Fix Copycat headstock's being transparent when using shaders
• Fix archbar bogey axle locations & Texture
• Fix bad texture name causing a warning in logs
• Fix crash when running setStation({}) (https://github.com/Creators-of-Create/Create/issues/5818)