Feature#30 register user

[danielasotomayor99]

Register view for users was created, see the ticket #30

• Inputs and submit button were created.
• Styles were added as in figma's dessign.
• If inputs are empty its styles change to warning.
• Message of mail validation: if mail already exists in db user can not to registrer ass a new one and a message appears.

• Responsive views for mobile, tablet and desktop.

  Screenshots

  Before: After: