BAPI - mapmanip submap noop handling

[DreamySkrell]

changes:

• rscadd: "BAPI - mapmanip submap noop handling."
• rscadd: "BAPI - mapmanip submap repeat setting."

both features are explained in forum thread https://forums.aurorastation.org/topic/20511-mapmanip-guide-submaps/

but basically:

• "noop" areas and turfs has special meaning and determine whether the submap manipulation is more like "replacing" or "appending"
• repeat setting controls whether extracted submaps should repeat on insertion

[DreamySkrell]

!build_bapi

[DreamySkrell]

!build_bapi

[DreamySkrell]

!build_bapi

[DreamySkrell]

!review

[github-actions[bot]]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[DreamySkrell]

!build_bapi

[DreamySkrell]

!review