Streaming sector export

[DoctorPresto]

Generate streamingblock, streaming sector and .xl files for changes, additions and deletions to sectors.

• allow custom naming of sectors
• all changes to vanilla sectors handled by deleting the node with ArchiveXL and adding the item to a new sector
• add to the export menu

[Simarilius-uk]

Have this in work in my github. Deletions via archivexl is done, looking at modifications/additions now

[Simarilius-uk]

moving static, basic instanced and destructibleInstanced work (I need to test arrays of instanced)