Cullen SUN

Results 3 issues of Cullen SUN

- Linked to official mangdang's [mini_pupper_description](https://github.com/mangdangroboticsclub/mini_pupper_description) repo. - Copied some config files from mangdang's [minipupper_ros](https://github.com/mangdangroboticsclub/minipupper_ros/tree/master/mini_pupper) repo. - Added support for ros2

Champ_gazebo package has contact_sensor to publish feet contacts with ground in simulation. The issue was champ_gazebo/launch/gazebo.launch.py used a hard coded links map file. This fix is to use a launch...

Pass args to champ gazebo launch file as for https://github.com/chvmp/champ/pull/119