Enhance User Authentication and Data Security

[Nayanpatel48]

Hi @GautamAnjali569 ,

I'm interested in contributing to this project by improving/adding user authentication and data security.

I propose implementing:

Sign up a user (Email/Password)
Sign in a user
Sign out a user
Form Validation and Handle Errors
Handle User Authentication State
Email Verification
Forgot/Reset Password
Google Sign in
Facebook Sign in
Add, Get & Update Logged In User Data
Upload, Get & Update Logged In User Profile Picture.

I'm ready to discuss this further and contribute a pull request.