Users should be able signup on WOSCA-book-gallery

[OdunayoOkebunmi]

To be able to use the application and access authenticated routes, users should be able to register using the sign up form that consumes the signup API.

[mazma1]

Depends on the signup API

A few changes to the mockup:

1. Include a Confirm Password field
2. The first field should be Username and not Full Name
   So the form will consist of Username, Email, Password and Confirm Password fields.

Mock up guide: