Split out EcdsaChannelSigner method from BaseSign, and rename it to ChannelSigner#1967

arik-so merged 4 commits into

lightningdevkit:mainlightningdevkit/rust-lightning:mainfrom

arik-so:2023-01-rename-signer-traitsarik-so/rust-lightning:2023-01-rename-signer-traitsCopy head branch name to clipboard