Add option to login as root user from config

[sanders41]

Purpose

❗ This won't work until fideslib 3.1.0 is released.

Allows logging in with a root user set in the config.

Changes

• Bump fideslib to 3.1.0
• Add a dependency injection for get_config
• Add a dependency injection override for get_config
• Add root_username and root_password to fidesops.toml
• Add root_user_scopes to the default config

Checklist

• Update CHANGELOG.md file
  • Merge in main so the most recent CHANGELOG.md file is being appended to
  • Add description within the Unreleased section in an appropriate category. Add a new category from the list at the top of the file if the needed one isn't already there.
  • Add a link to this PR at the end of the description with the PR number as the text. example: #1
• Applicable documentation updated (guides, quickstart, postman collections, tutorial, fidesdemo, database diagram.
• If docs updated (select one):
  • documentation complete, or draft/outline provided (tag docs-team to complete/review on this branch)
  • documentation issue created (tag docs-team to complete issue separately)
• Good unit test/integration test coverage
• This PR contains a DB migration. If checked, the reviewer should confirm with the author that the down_revision correctly references the previous migration before merging
• The Run Unsafe PR Checks label has been applied, and checks have passed, if this PR touches any external services

Ticket

Fixes #1067

[pattisdr]

👍

[pattisdr]

still trying to verify locally, right now I can't login due to a 400 on the OPTIONS request http://0.0.0.0:8080/api/v1/login but this may be unrelated.

[pattisdr]

OK I was able to login, still getting this bg error in the UI, I'm going to switch to main and see if I can duplicate there, I don't think this would be related at first glance? You have to have privacy requests in your db.

@sanders41 and I also discussed deprecating the superuser script which was originally created to let you make the "first user" which could then create other users, but this functionality does the same thing, without creating an actual user or client object.

[pattisdr]

Ignore the bg error, this was something due to a new privacy request status on my local machine!

[pattisdr]

Thanks for removing this "create_superuser" script while you were here, it makes sense to me to just have one way to create this root user.