[ETF] Entity Texture Features

[V4.3.1]

• updated russian translation to 4.3 thanks to @Felix14-v2
• fixed a button translation
• added compatibility warning message for Quark as it's [Variant Animal Textures] setting must be disabled for ETF's to work
• resolved an issue with additional textures like enderman_eyes.png or sheep_fur.png resetting after a short time if the base texture had .properties but the additional texture didn't
• added shulker bullet texture support