Register User Mutation

[kavinphan]

Description

Create a POST route handler at /api/users that accepts form data and creates a User record using the form data. The form data will include the following fields: inviteToken and password.

Success Criteria

• The form data is validated using a zod schema
• If there is not a UserInvite record with the given token, then POST /api/users returns a 404 status code with JSON body {"message": "Invite does not exist"}
• If the UserInvite record with the given token is expired, then POST /api/users returns a 400 status code with JSON body {"message": "Invite has expired"}
• If there is already a User record with the given email, then POST /api/users returns a 409 status code with JSON body {"message": "User already exists"}
• POST /api/users creates a new User record and returns a 200 status code
• The password is hashed using argon2
• The route handler is documented with a description of its function, parameters, and responses
• There is a test file that covers the success criteria