In the wire project, create the `closing_signed` message type. - This type should include properties as defined in [BOLT #2]( https://github.com/lightningnetwork/lightning-rfc/blob/master/02-peer-protocol.md#closing-negotiation-closing_signed). - It should implement `IWireMessage` and `deserialize` and `serialize` methods. - It should include basic unit tests for these methods
In the wire project, create the
closing_signedmessage type.IWireMessageanddeserializeandserializemethods.