The final image produced by the compositor can have domain translation
on it (e.g. caused by a Translate or Transform node). Similar to how
the regular compositor viewer node remembers the output domain
translation, do the same in the compositor modifier.
Bubble back that translation up to VSE rendering code, where it is
then added to regular strip transform.
In order to make this "bubble up" part easier, refactored modifiers
so that instead of soup of parameters they all get a struct
ModifierApplyContext with all the relevant data.
Added a new VSE render test that covers various compositor
transformation nodes (translate, rotate, transform, corner pin).
Pull Request: https://projects.blender.org/blender/blender/pulls/147695
1973bad86c
