Feat : UI and Functionalities for onBoarding

[AhmedMustafa505]

Added the required UI & Functionalities to the 3 screens in onBoarding:
(1) SignUp: added a title and a button to allow the user to login with email and navigate to signIn screen.
(2) SignIn :

• added a UI text inputs and a button matching the QLASH application in app store.
• added the functionality for validation for email and password using Formik and Yup.
  (3) GameSelection :
• added a data file matching the games offered by QLASH and used it in the game selection screen.
• added the UI for rendering the whole games and functionality to select one game to play.
• rendered the email that was logged in by the user.

(*) added QLASH logo in the header as it is in the real application.