Middleware for User/Project modification methods

[tmthecoder]

Create Middleware to guard user type changing and user creating

Context

We need to guard the endpoints that allow for user type-changing and creation as well as project creation

Requirements & Criteria

• Middleware is added to the createUser, setUserType, and createProject methods in the api-gateway
• This middleware checks the X-User-Email and X-User-Password headers to validate that the caller is a user with type superadmin. If not, the middleware fill fail and return a 401 response
• Use the authenticate method within the auth-service to validate a user (Depends on Add user authentication functionality #31 to be able to use the authenticate method)
  • This method will fail if the user credentials are invalid or return the user information if valid.

Testing

• Please ensure there are tests written for the following cases (at a minimum):
  • Calling each endpoint with no headers
  • Calling each endpoint with only one of the two headers
  • Calling each endpoint with both headers and invalid credentials
  • Calling each endpoint with valid credentials