Extend ClimaCore Remap Interface for TempestRemap

[jb-mackay]

Extends the remap and remap! methods of ClimaCore for the TempestRemap module.

Builds off #793 by introducing LinearTempestRemap subtype of AbstractRemap.

• [x] Code follows the style guidelines OR N/A.
• [x] Unit tests are included OR N/A.
• [x] Code is exercised in an integration test OR N/A.
• [x] Documentation has been added/updated OR N/A.

[jb-mackay]

@simonbyrne let me know if you think it makes sense to keep this as a separate module or if we want to move this code to src/Operators.