message: [lang] Add Clone impl for OnDeployHandler
diff: @@ -172,7 +172,7 @@ impl From<&ast::ItemState> for State {
  ///
  /// This is what is getting called upon deploying a smart contract.
  /// Normally this is used to initialize storage values.
  -#[derive(Debug)]
  +#[derive(Debug, Clone)]
  pub struct OnDeployHandler {
  /// The attributes.
  ///
  