feat: add scaling/position/rotation global offset

[Bronya-Rand]

This PR addresses Request #88 for a offset on the Position/Scaling/Rotation feature in Brio.

What's Changed?

• Added AdjusterOffset to PosingCapabilities.cs.
• Changed offset logic in editor to use adjuster variable.

[Minmoose]

Once more, Thanks for the PR! There are some issues with this, but I don't quite have time to explain in detail, basically, certain step values cause the DragFloats to no longer work, I'm also not sure of the placement on UI. Will do more investigation when I have time.

[Bronya-Rand]

Thats fine. At least you have something that works as a baseline. I didnt know about the DragFloat thing but obvs UI is up to ya. Just chose where I place it just for testing.

[Bronya-Rand]

basically, certain step values cause the DragFloats to no longer work

If this is referring to the Offset being at 0, I thought it be intended since let's say someone doesnt want to adjust their settings for that character on accident. If it something else, then take your time to explain when you can. (Basically a 2nd lock to the lock function :p)

[Minmoose]

Pending to be added in 0.6.0