Variant of copy for 2d dpsp (!113)

## What is the new feature
New copy variants for 2d,4d,5d fields from double-precision to single-precision.

Co-authored-by: Yen-Chen Chen <yen-chen.chen@tum.de>
Approved-by: Yen-Chen Chen <yen-chen.chen@tum.de>
Merged-by: Yen-Chen Chen <yen-chen.chen@tum.de>
Changelog: feature