[develop] Updates for building and running on MacOS (x86_64 and M1)

[natalie-perlin]

DESCRIPTION OF CHANGES:

Updates to modulefiles and Lmod initialization for MacOS machines, architecture-independent scripts.
Build modulefile now uses srw_common module with list of standard software modules for the release.

The following files have been updated:
./modulefiles/build_macos_gnu.lua
./modulefiles/wflow_macos.lua
./etc/lmod-setup.sh
./etc/lmod-setup.csh

Type of change

• Update of a supported feature (non-breaking change which adds functionality)
• This change requires a documentation update

DEPENDENCIES:

• My code follows the style guidelines in the Contributor's Guide
• I have performed a self-review of my own code using the Code Reviewer's Guide

LABELS (optional):

A Code Manager needs to add the following labels to this PR:

• enhancement
• documentation
• release
• high priority

[MichaelLueken]

@natalie-perlin This PR will be merged to the develop branch, not the release/public-v2.1.0 release branch. We can keep this PR open so that these changes are added to the develop branch as well, but a separate PR will need to be created to merge this work to the release branch.

[MichaelLueken]

@natalie-perlin Thank you very much for updating the MacOS the files necessary to build and run! I have two minor comments on your changes. Otherwise, these changes look good to me!

[danielabdi-noaa]

Good to see the move towards using conda and srw_common. Looks good to me so approving.

[MichaelLueken]

@natalie-perlin Thanks! Now approving.