Xverse does not support Schnorr signatures, causing issues with nostr relay validation

[andredevjs]

We've encountered an issue where Xverse does not support Schnorr signatures for signing messages, which are the default validation method for Nostr relays. This is causing problems when we try to produce a valid signature for a Nostr event.

Looking at the verifySignature method in nostr-tools, it seems that the issue lies in the inability to produce a valid signature that the Nostr event can accept.

Could you please provide some guidance on how we can proceed in this scenario? Any advice or potential workarounds would be greatly appreciated, if there's any, if I should go ahead and implement the code and open a PR for it

Thank you for your time and assistance.