Refactor compare code to produce a single NetCDF file with all uncertainties

[jlmaurer]

• Added code to produce a single netcdf file with uncertainties when calculating comparisons. This also ensures that all the strain rate components and their uncertainties are preserved in the comparison file.
• Added explicit bounds to figures so that can be changed easier
• Ensured that all methods return at least a placeholder for velocity uncertainties
• Removed the check_coregistered_shapes function because wavelets for some reason does not always return the
• same grid that was passed to it. It turns out not to matter whether the grids are the same as it gets handled by xarray.

[jlmaurer]

@kmaterna check this out and let me know if you want any modifications!

[kmaterna]

Is this part from a merge conflict that happened?

[kmaterna]

Hi @jlmaurer - it looks so good! I think that parameterizing the scales of the outputs was long overdue. I also like removing the check_sizes for an xarray function - how it's supposed to be! I did notice around the top of output_manager.py, there's something that looks like git-generated code, probably from a merge of two versions of the same file. Is that intentional?