Distributed regridding of bathymetry

[simone-silvestri]

Regridding of bathymetry requires extending periodic dimensions and subsequent passes where we need to define new grids.

This is not compatible with distributed grids for the moment, so it is better to regrid on the global grid and partition the array in the different cores once this operation is done.

Probably, when we find a better way to smooth the bathymetry (as suggested in #253) we can revisit this simple implementation and split the regridding on different cores.

[glwagner]

When does this fail? When the global bottom height does not fit on one GPU?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 18 lines in your changes missing coverage. Please review.

Project coverage is 0.00%. Comparing base (ff4b883) to head (d53cf69).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Bathymetry.jl	0.00%	18 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #309   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         34      34           
  Lines       1968    1983   +15     
=====================================
- Misses      1968    1983   +15     

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[simone-silvestri]

When does this fail? When the global bottom height does not fit on one GPU?

I think so.