Feature/robot self filter

[ashvinganesan]

This PR adds the robot-self filter package. This means that the robot doesn't see itself and think that it is hitting a wall/object. #107

[TagCiccone]

When building robot_self_filter with colcon, a dev warning comes up. It's not an error, so we can supress it.

In colcon.meta: Add

robot_self_filter:
    cmake-args:
        - "-DCMAKE_POLICY_DEFAULT_CMP0144=NEW"

to the end of the file.

(colcon.meta exists on /develop, so either merge develop into this branch or copy it wholesale)

[ashvinganesan]

When building robot_self_filter with colcon, a dev warning comes up. It's not an error, so we can supress it.

In colcon.meta: Add

robot_self_filter:
    cmake-args:
        - "-DCMAKE_POLICY_DEFAULT_CMP0144=NEW"

to the end of the file.

(colcon.meta exists on /develop, so either merge develop into this branch or copy it wholesale)

copied the file and added the change.

still showing up as requesting change even when I do rerequest (not sure why) I made the changes