Implement Yup and Formik into sign in and sign up form

[Lucas-Marques-Leao]

Description

• We need to implement validation on both forms in order to release better data to our backend.

Prerequisites

• add Yup and create a schema for each form
• add Formik using the Yup schema to validate in each form
• make it so when you press the button the validation catches the errors and print them on screen