feat: order processing

feat: order commands result save/load

internal/error/input.go

@@ -167,3 +167,11 @@ func NewSendUnreachableDestinationError(arg ...any) error {
 func NewSendShipOwnerHasNoPlanetsError(arg ...any) error {
 	return newGenericError(ErrSendShipOwnerHasNoPlanets, arg...)
 }
+
+func NewQuitCommandFollowedByCommandError(arg ...any) error {
+	return newGenericError(ErrInputQuitCommandFollowedByCommand, arg...)
+}
+
+func NewUnrecognizedCommandError(arg ...any) error {
+	return newGenericError(ErrInputUnrecognizedCommand, arg...)
+}