Improve list hardware components output and code for better readability. (backport #1060) (#1061)

Author: destogl

ros2controlcli/ros2controlcli/verb/list_hardware_components.py

@@ -38,13 +38,18 @@ def main(self, *, args):
             hardware_components = list_hardware_components(node, args.controller_manager)
 
             for idx, component in enumerate(hardware_components.component):
-                print(f'Hardware Component {idx}\n\tname: {component.name}\n\ttype: {component.type}')
+                print(f'Hardware Component {idx+1}\n\tname: {component.name}\n\ttype: {component.type}')
                 if hasattr(component, 'plugin_name'):
                     plugin_name = component.plugin_name
+                # Keep compatibility to the obsolete filed name in Humble
+                elif hasattr(component, 'class_type'):
+                    plugin_name = component.class_type
                 else:
                     plugin_name = f'{bcolors.WARNING}plugin name missing!{bcolors.ENDC}'
 
-                print(f'\tplugin name: {plugin_name}\n\tstate: id={component.state.id} label={component.state.label}\n\tcommand interfaces')
+                print(f'\tplugin name: {plugin_name}\n'
+                      f'\tstate: id={component.state.id} label={component.state.label}\n'
+                      f'\tcommand interfaces')
                 for cmd_interface in component.command_interfaces:
 
                     if cmd_interface.is_available: