set deprecated warnings for all mapCube related operations

[lazarusA]

functionality using mapCube still works, however using xmap would be the way forward, hence setting some deprecation warnings for all related operations would be nice to have before removing them all!

[Balinus]

Do we have examples on how to convert mapCube to xmap? I confess I have maybe 50+ mapCube functions, all over the place on different projects... 😁

[lazarusA]

Yes, check the mapCube docs section. Now there is an 'xmap' and 'mapcube' version 😬

[Balinus]

ok! Somehow, I guess having a mapCube section and not a xmap section was confusing me. Perhaps a little section that explains the modifications by reusing the xmap and mapCube examples from the mapCube section? Switching back and forth between tabs is hard to compare.