Updating Code Base for AIM 2024

When ever you update the files/content of b3rb_ros_line_follower & dream_world present in ~/cognipilot/cranium/src, the following commands to build the changes:

$ cd ~/cognipilot/cranium
$ colcon build
$ source ~/cognipilot/cranium/install/setup.bash

After succesful, build a similar message should pop up: