ClapBackend: Show a help message when there're no args
ClapBackend: Show a help message when there're no args

exonum/exonum,exonum/exonum,exonum/exonum,alekseysidorov/exonum,alekseysidorov/exonum,exonum/exonum,alekseysidorov/exonum,alekseysidorov/exonum