React: Convert email to lowercase before attempting Auth

[AmanNegi]

Issue

When we try to log in using email, it takes case-sensitive emails which is not expected, this is similar across SignUp as well. There's no need for case-sensitive emails, so convert it to lowercase as we keep on getting input.

Screenshots

References:

• https://github.com/AmanNegi/FreshNest/blob/bdf549c178eb87077a9221141538ef34424656be/frontend/react/src/pages/Auth/presentation/Login.jsx#L80
• https://github.com/AmanNegi/FreshNest/blob/main/frontend/react/src/pages/Auth/presentation/SignUp.jsx

[ShimanshuChauhan]

Hey @AmanNegi Can you please assign it to me.

[AmanNegi]

Sure feel free to get started!