Frontend: create account page

[FlorentinaPetica]

Description

This pr is for CreateAccountContainer

Fixes #197

How to test?

Run : npm run dev got to /sign-up

Checklist

• [x] I have performed a self-review of my own code
• [x] I have followed the name conventions for CSS Classnames and filenames, Components names and filenames, Style filenames, if you are in doubt check the the project README.MD and here https://github.com/HackYourFuture-CPH/curriculum/blob/master/review/review-checklist.md
• [x] I have commented my code, particularly in hard-to-understand areas, if you code was simple enough mark the box anyway
• [x] I have made corresponding changes to the documentation, if you code was simple enough mark the box anyway
• [x] This PR is ready to be merged and not breaking any other functionality

[Impressiv3]

Looks really nice! The only suggestion that I have is to change the mobile input field type to text. ( what I have in mind is that sometimes people want to give their phone numbers like: +45 26578555 )