Scripts for building new mask.regions files in 2D and 3D

Scripts for building new mask.regions files in 2D and 3D (depth levels [z]) using the mesh.mask files of /esnas/autosubmit/con_files.

See merge request !5

The Irminger Sea is missing in the total Arctic

Changed numpy alias from N to np, as it's the recommended shortcut, even used in numpy documentation. Reformatted to meet style guide criteria

script to create basins

See merge request !6

Fixed error when trying to create figs folder. Also added an option to convert the pngs to an animated gif

- cfu/cfunas updated with respect to esnas

Develop minor prep restarts changes

A few minor changes to interpolate ORAS4 restarts

- TRANSFER: added "atm_nudging" stuff along with updating a few other transfer scripts available for general use...