Allow Model Pieces to be animated in world space

rarely there comes up a need to be able to translate and/or rotate pieces in world space in the unit animation

there's only a couple of examples I know of at this time:
- having a piece point straight down no matter what (I forget what for, Legion Phoenix beam's aim not being effected by roll?)
- being able to position and rotate model pieces freely so that the Legion Mukade (legpede) can be procedurally animated
- Here I am manually undoing the object space transform- but the animation script is not updated fast enough for a perfect cancellation, resulting in the body pieces being flung about as the unit/head piece goes over hills
- https://discord.com/channels/549281623154229250/692380056001052693/1210807328065060884
- Enabling `upright` removes the roll/pitch following from the unit- making the tail more stable but now the head piece doesn't rotate to match the ground :(
- https://discord.com/channels/549281623154229250/692380056001052693/1210818973365440612

What if I could just... not have to deal with trying to cancel out the unit/object space transformation?

I am trying to pin down what needs to be done before I start laying down code changes

Also this issue provides a place to discuss this

Possible Work to be Done
- Allow for setting one or more flags to ignore parent's transformations- translation, rotation, and/or scale. I imagine a `SetPieceWorldSpaceFlags(pieceIdNumber, bitFlags)` COB function would handle this.
- Also scale would likely not need to be ignored very often.
- Create a `WorldTurn` function or `Turn` bool parameter that applies rotation around a world space axis
- Shorthand for setting the ignore parent rotation flag + applying a Turn animation?
- Do the same for `Move`?
- If bool parameter added to Move/Turn, then does the `SetPieceWorldSpaceFlags` function even have a reason to be exposed to the COB environment? (Still probably going to be used internally)

Start with the unit animation path and the COB Move/Turn behavior named in the issue. Compare the proposed world-space flags with WorldTurn and possible Move changes; done would mean a concrete design and implementation scope for translating or rotating pieces in world space without manually cancelling parent transforms.

Written by the indexing model from the issue text.