Integrate Unstoppable Domain module in web3-onboard

[0xtuytuy]

Is your feature request related to a problem? Please describe.
This would allow Unstoppable Domain owners to login into our webapp with a native login. It should be a simple module to add to our integrations. Hopefully would open up our target user pool.

Describe the solution you'd like
Here is a set way to integrate with Unstoppable Domain: https://docs.unstoppabledomains.com/login-with-unstoppable/login-integration-guides/web3-onboard-guide/

Should be pretty straight forward to add it as a module. Whom ever does this task please get in touch with me regarding REACT_APP_CLIENT_ID
REACT_APP_REDIRECT_URI
REACT_APP_FALLBACK_ISSUER

Describe alternatives you've considered
NA

Additional context
NA