Auto generate LN wallet for users onboarding to Damus

[alltheseas]

user story

As a new user onboarding to Damus that does not have a LN wallet, I would like an easy way to create a wallet from Damus app, so that I can receive my first sats, and zap other nostriches.

acceptance criteria

1. During onboarding user has an option to create a LN wallet: user is prompted to create new LN wallet Y/N
2. Damus connects to newly created wallet via NWC
3. Damus updates profile with newly created LN address
4. User is notified of successful LN wallet creation
5. User is notified of their new LN address

Related #627

[alltheseas]

@bumi @kiwiidb when can we discuss Alby x Damus partnership on this 🙏

cc @jb55 @danieldaquino

[alltheseas]

Interesting cashu development

https://damus.io/note1gvpk4z9lwc90d26c9e5urg3j4e45t8tgujmdljaympwd9qecx29sx5mc0f

Highly experimental Lightning address that will lead to loss of funds:

@cashu.me

[alltheseas]

Making note of Npub.cash to be evaluated