Implement user authentication

[R055A]

Description

Implement user authentication

• add authorization verification to existing features for logged-in users
• add user login feature
• add authorization verification to API gateway
• add test cases for user authentication
• apply user authentication changes to existing test cases
• add authorization token to user schema
• add missing documentation, improve existing documentation
• improve configuration

gnerating authorization token hex strings is resourced from how-to-generate-random-hex-string-in-javascript

Related Issue

Solves #21

Type of change

• New feature (enhancement)

How Has This Been Tested?

Multiple new test cases for testing user authentication and changes for user authentication applied to more existing test cases

• Automated testing

Checklist:

• Does a similar (open or closed) pull request not already exist?
• Is the pull request head repository a fork repository?
• Is the pull request compare branch a development branch?
• Is the code documented, particularly in hard-to-understand areas?
• Does the code build without new warnings?
• Has testing been performed that proves changes are effective and work?
• Has a self- and/or peer-review of the code been performed?
• Does all new and existing automated testing pass?
• Is the person responsible for the repository assigned to the pull request?
• Is the pull request linked to a project?
• Is the pull request linked to a milestone?

For more information, refer to the Contributing Guidelines and Code of Conduct links at the bottom of this page.

[kimslor]

Just some formatting changes.