Implement AddElement or ChangeOrRemove interfaces in applicable TOs

[fabiocarvalho777]

A few TransformationOperation classes already implement AddElement or ChangeOrRemoveElement. A few of them actually also extend AddElementTO or ChangeOrRemoveElementTO abstract classes.

However, there are many other Transformation Operations that could also rely on these interfaces, or abstract classes, like RemoveProperty for example.

This issue is about identifying them all and applying one of those interfaces or abstract class.