Redesign actor transformation application

[arbron]

The current actor transformation interface is a complex and confusing interface. With some changes coming to Wild Shape in the 2024 rules and the move to V12 this would be a good chance to rebuild that interface to be more intuitive.

• Display the token of the actor being transformed and the actor they are being transformed into, to make it clear what is being changed
• The "Wild Shape", "Polymorph", and other preset buttons should be states that update the checkboxes to make it clear what is happening
• Fieldsets should be used to group options together rather than just presenting one giant list