User model and Register Post route

**What**
Create a user model

**Why**
_Explain why your enhancement is necessary or needed. Whats the reason for it?..._
to add a usermodel and post routes to register a user.

**How**
Could make a models directory and add the model and route.

**Requirements**

I would have to look into bcrypt for python for the requirements
https://pypi.org/project/bcrypt/

Start by locating the Flask app's existing route structure and dependency requirements, then review how a models directory would fit the project. Use the bcrypt documentation linked in the issue to determine the password-handling dependency. Done means a user model and a registration POST route exist with the required dependency recorded; no tests are named in the issue.

Written by the indexing model from the issue text.