Expanded types to add more missing properties

[liamf1986]

Expanded the types a little more to add some other properties I've found shared across Spine 3.7, 3.8 and 4.0.

I wouldn't normally include enums in the same file as interfaces but I couldn't identify a clear pattern for where to define them based on the rest of the code so I just put them at the top of this file. If you'd rather they were split into individual files or put into one enum file together just let me know.

Mostly new additions but there is the one fix where I accidentally typed tracks as ITrackEntry instead of ITrackEntry[] previously.

[ivanpopelyshev]

I use pixi blendModes directly, you can remove that enum in favor of import('@pixi/const').BLEND_MODES