[2/n] multi: prep MessageSignerRing for G175 messages #8163
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In preparation for gossip 1.75 updates, we add a
SignMuSig2
method to theMessageSignerRing interface, then we pass around the MessageSignerRing
interface to various systems that will need its
SignMuSig2
andSignMessageSchnorr
methods for signing the upcoming gossip 1.75 messages.This includes the gossiper, the funding manager and the channel status
manager.
Depends on an update to btcd to export the MuSig2 signing options.
Part of the Gossip 1.75 epic