Blender add-on rewrite, convert decompression executable to DLL

Changelog:

Import and export rewrite for waaaaaaaaay faster performance
Consolidate all functionality into one add-on
Compressor/Decompressor converted to DLL to interface with Blender
Import/Export .anm.pxd files directly—no more .outanim!
Root motion now uses skeleton object transformation instead of root bone
Standalone Skeleton Import based on Turk645's model importer
Batch Animation Export Menu
Visual keying export (bone positions are recorded as you see them in Blender, even with constraints applied, so no need to bake actions)
Set scene frame data to active action's values

AdelQue / FrontiersAnimDecompress