Implement Web3auth modal with Web3auth web SDK

[kantagara]

Summary Currently, we're implementing web3auths unity default implementation which really sucks for WebGL (especially if you're several scenes deep in the game).

Suggested features or ways to address the summary We got a suggestion from web3auth folks to just re-implement their web3 web sdk in unity. Motivation It will greatly improve the End-User/Developer experience when trying to login to the game.

Acceptance Criteria

• [ ] A new window popus up for the web3auths authentication service depending on the provider you've selected