Reimplement the playground with ROS 2

[co-li]

Rationale

Wisconsin Robotics plans to use a ROS 2 codebase for URC 2025.

Required Actions

• Research ROS 2 and how it differs from ROS 1
• Rewrite WRoverPlayground using ROS 2
• Document how to use the WRoverPlayground with ROS 2
• Get feedback on the new WRoverPlayground