[ETF] Entity Texture Features

[4.4.3]

• added support for creeper energy swirl texture variation and emissives, why emissive texture support you ask? because it lets you set a static texture for the overlay that doesn't spin but still glows
• Added an option to disable the compatibility patch applied to the 3d skin layers to enable skin features to work (this only ever needs to be disabled if it conflicts with some other mods version of a 3d skin layers compatibility patch, or if a future 3d skin layers mod update breaks this)
• players skulls now correctly reflect the texture they are meant to display, instead of the players current skin if online
• Fixed crash caused by unexpected values in property ranges
• Tweaks to player skin settings screen
• Tweaks to classes used by EMF
• api additions