LabCAS API documentation review

[nutjob4life]

See the NIST LabCAS API documentation and review it for correctness and completeness.

Note that this documentation is produced from Postman, and the Postman collection should be checked into a source repository if possible, quite possibly here in the LabCAS NIST Infrastructure repository, although the collection references EDRN as well.

A better place would be the generic JPL LabCAS backend repository.

[nutjob4life]

I reviewed the documentation and made several updates, including:

• Adding session tracking information to the auth endpoint
• Creating new documentation on the logout endpoint
• Updating the Postman specifications to include fetching the JWT and session ID
• Skipping the logout endpoint during Postman tests
• Some grammar/spelling fixes
• Generating new OpenAPI "Swagger" YAML file
• Updating the Postman JSON, Swagger YAML, and HTML docs on the LabCAS help portal
• Adding the Postman JSON spec to the LabCAS backend repository.

Please note: the corresponding page on the EDRN portal should also be updated, however due to the government shut down, we are not allowed to make changes at the current time.