Allow API Keys to be passed through the Authorization header

[aloftus23]

🗣 Description

The auth function will now check if the token is an API key using regex. If so, will check the database for the hash.

💭 Motivation and context

Allow API keys to be passed in the same header as the JWT token. Inline with the old typescript backend

🧪 Testing

Passes pre-commits and pytests. Tested in postman as well.

✅ Pre-approval checklist

• This PR has an informative and human-readable title.
• Changes are limited to a single goal - eschew scope creep!
• All future TODOs are captured in issues, which are referenced
  in code comments.
• All relevant type-of-change labels have been added.
• I have read the CONTRIBUTING document.
• These code changes follow cisagov code standards.
• All relevant repo and/or project documentation has been updated
  to reflect the changes in this PR.
• Tests have been added and/or modified to cover the changes in this PR.
• All new and existing tests pass.

✅ Pre-merge checklist

• Revert dependencies to default branches.
• Finalize version.

✅ Post-merge checklist

• Create a release.

[DJensen94]

LGTM

[rapidray12]

In the future we need to revise the use of regex