Integrate web3 login

[ArthurHoeke]

Implement Polkadot.js extension wallet signing for web3 login support.

[Bhushan-04]

assign this to me , if it's okay for you !

[ArthurHoeke]

assign this to me , if it's okay for you !

Thanks for contributing, let me know if you have any questions or require help with the source code!