Add scripts and docs for maintainers

[anngvu]

Go through: https://github.com/gf-dcc/data-model/blob/main/getting_started.md

• [x] @cconrad8 Make sure guide works
• @cconrad8 (Optional) Update scripts/* and Markdown content for exercise 3 (add option to generate Googlesheet format for template). Resources:
  • https://schematicpy.readthedocs.io/en/latest/cli_reference.html as reference.
  • https://www.datacamp.com/tutorial/how-to-write-bash-script-tutorial
• [x] @anngvu needs to set up more creds (or fill in instructions on how to set up creds) for exercise 4.
• @cconrad8 (Optional) Write script for exercise 4.

Also:

• [x] @anngvu Add clarification on running make.

[cconrad8]

This is super helpful!!! @anngvu thank you i went through the getting started so far and now I need to go through schematic docs.

[anngvu]

@cconrad8 I updated script and added more to the guide doc. You may have to pull changes in codespace and rerun the setup creds script again. Changes: https://github.com/gf-dcc/data-model/pull/70/files

[anngvu]

@cconrad8 I'm going to make the suggested steps for you optional and close this.