Added generic DispatchLevelResult to the MessageDispatchResult (#1670)
* Added generic DispatchLevelResult to the MessageDispatchResult * Removed unnecessery `Clone + Decode + sp_std::fmt::Debug + Eq` + clippy
* Added generic DispatchLevelResult to the MessageDispatchResult * Removed unnecessery `Clone + Decode + sp_std::fmt::Debug + Eq` + clippy