Generic IO for server

[bena-nasa]

This makes the server interaction totally generic in the new IO layer for History. Will work for any grid + any ungridded dimensions for any supported type.

Had to make new constructor for array reference. Note the new helper routines are needed and are a bit ugly because this was logic previously stuffed in the grid factory but per @tclune we are trying to avoid a proliferation of methods on the factories. So instead I say, if the grid has 6 tiles I do the messiness needed to the write to our cube format via the server. Still a bit kludgy but I don't see how there wouldn't be a kluge somewhere short of adding the methods that have to do this to the factories or something that is cube specific. This logic is unavoidable somewhere.

At the very least this shows how the actual call to the server can be made to require not a single conditional for rank and type where as the old GriddedIO layer had a if rank==2, if rank==3, and that was it.
This should make writing checkpoints via the server with this layer easy too @pchakraborty

Note I'm also still using a few helper functions in MAPL_Base (MAPL_GridGet and MAPL_GridGetInterior), both are still are needed for basic operations and introspection of grids.

I have confirmed I can write files on the cubed-sphere with this. This just seemed like a good spot to stop and make a PR on a Friday. Obviously more work to do, those helper procedures should be generalized to work with an ESMF Geom, grid specific now, need to work on this. Other details still to implement and units tests needed.

Types of change(s)

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Trivial change (affects only documentation or cleanup)

Checklist

• Tested this change with a run of GEOSgcm
• Ran the Unit Tests (make tests)

Description

Related Issue

[tclune]

See inline comments.

[tclune]

See inline