Update for ROS 2 Humble (Patch Release 1)

[Tiryoh]

Plan: https://github.com/mangdangroboticsclub/mini_pupper_ros/blob/ros2/HUMBLE_PLAN.md

ROS packages

• Add mini_pupper_control package #36
• Update mini_pupper_bringup to support both Gazebo (Cleanup packages and update README #40)
• Update mini_pupper_bringup to support real Mini Pupper (Update bringup launch file and URDF to support real Mini Pupper #45)
• Update mini_pupper_navigation to support SLAM and Navigation on Gazebo (Support Cartographer and Navigation2 in Humble #38)

Documentation

• Add setup document of real Mini Pupper to the README (Cleanup packages and update README #40, Update bringup launch file and URDF to support real Mini Pupper #45)
• Add setup document of simulation to the README (Cleanup packages and update README #40)
• Add a simple tutorial to try teleop with simulated Mini Pupper (Cleanup packages and update README #40)
• Add a simple tutorial to try slam with simulated Mini Pupper (Cleanup packages and update README #40)
• Add a simple tutorial to try navigation with simulated Mini Pupper (Update for mini_pupper_navigation #63)
• Add a simple tutorial to try teleop with real Mini Pupper (Update bringup launch file and URDF to support real Mini Pupper #45)
• Add a simple tutorial to try slam with real Mini Pupper (Update for mini_pupper_navigation #63)
• Add a simple tutorial to try navigation with real Mini Pupper (Update for mini_pupper_navigation #63)