Greenlight: close channel

[rolznz]

we need to be able to close channels to redeem onchain funds

This needs to be implemented in glalby first, and then we can consume them in nwc through glalby-go

[rdmitr]

PRs are up:

• glalby: https://github.com/getAlby/glalby/pull/10
• glalby-go: https://github.com/getAlby/glalby-go/pull/6
• nostr-wallet-connect-next: https://github.com/getAlby/nostr-wallet-connect-next/pull/138