Roslaunch file setup

[w29ahmed]

What i'm thinking is:

1 High level launch file for each race:

• Drag race
• Circuit Race
• Urban Road Challenge
• Obstacle Avoidance challenge

The nodes that have different configurations for each race are:

• rr_compter_vision
• rr_path_planner

A further distinction we MAY need to add is a command line argument to the high level launch files to specify racing conditions (sunny facing away, sunny facing towards, cloudy/overcast), since within the computer vision node, endline and traffic light detection use colour thresholding that is subject to those different lighting conditions, and we can have thresholding values for each condition to optimize it.

This means the computer vision node will need 4 races x 2-3 lighting conditions ~ 8-12 launch files, each of which will be referenced accordingly in the high level launch file