UW-269 Extend set_config.py tool to "export" variables

[elcarpenterNOAA]

Description

For Issue #272

We will need to be able run a command line tool in bash that "exports" the variables in a given section of our YAML or INI file.

It was decided that the cli code was out of scope for this ticket and instead part of the modal-cli ticket planned for the next sprint.

Type of change

Please delete options that are not relevant.

• 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 not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes need updates to the documentation. I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing tests pass with my changes
• Any dependent changes have been merged and published

[christinaholtNOAA]

This is looking really nice. :)

[christinaholtNOAA]

@elcarpenterNOAA This looks great!

Please take my only comment below with a grain of salt. I'm 💯 fine with whatever you decide to do there (ignoring me included)!