Performance Update & Tweaks

Multiple performance updates for next round of testing with other resource packs and data packs.

• Flat texture dimensions decreased, decreasing file size, reducing memory, and more efficient
• Glass more efficient.
• Prismarine more efficient - However is still glitchy with some shaders, we know this, but less performance hit when tested both with Conduit Remastered and solo.)
• Minor updates to various models and PBR, some purely for testing. Remember this is alpha, and we know there's mistakes. In fact a lot of them are entirely deliberate mistakes for performance testing and comprisons between shaders at a minute level, and trying things out. On full release they will be optimised and cut down in size.
• Additional hanging roots texture added (no _n or _s) from the "Warped" texture pack to allow overrides for testing and to work with The Time Machine as this will be released before Warped. _n and _s will be added.
• Unused incorrectly named texture removed.
• Colouring and minor changes for testing for "Talon" / "Bird Of Time" / Parrot