Split an annotation into two separate annotations (without "joining") during insertion of a region

When a new region is inserted to a sequence it is possible to handle annotations as following:

• Resize
• Remove
• Split

When split is selected the annotation is split as a joined annotation (in the Annotations editor you can see e.g. "join(10..12,16..19)").

One more option to handle annotation should be added to split an annotation into 2 separate (not joined) annotations, so it should be:

• Resize
• Remove
• Split (join annotation parts)
• Split (create separate annotations)