Added transpose stub to match upcoming capability in OOPS

[DanStoneMO]

Description

Adds a stub for the transpose method to State.h in order to comply with the method's upcoming addition to OOPS.

Issue(s) addressed

See discussion: https://github.com/orgs/JCSDA-internal/discussions/164

Dependencies

This should be merged alongside the equivalent PRs for lfric-jedi and ops-um-jedi, but is not dependent on them.

Impact

Expected impact on downstream repositories or workflows:
None unless transpose functionality is to be added to orca-jedi, in which case the stub will need to be expanded
into a full method.

Checklist

• [n/a] I have updated the unit tests to cover the change
• [n/a] New functions are documented briefly via Doxygen comments in the code
• [n/a] I have linted my code using cpplint
• [✓] I have run the unit tests
• [✓] I have run mo-bundle to check integration with the rest of JEDI and run the unit tests under all environments
  See mo-bundle test output:
  http://fcm1/cylc-review/taskjobs/dstone/?suite=mob_transpose

[ss421]

Thanks Dan :-)

[twsearle]

Thanks very much for doing this!

[DanStoneMO]

@twsearle this might not need the coordinate merge tag, since there's no mechanical dependencies on the other transpose-stub PRs

[twsearle]

@twsearle this might not need the coordinate merge tag, since there's no mechanical dependencies on the other transpose-stub PRs

ahh sorry I thought this needed the OOPS PR to be merged before it could be merged. Appears not will merge now!