Building and Running

                    T1:
                    cd ~/SnowCron/ros_projects/harsh
                    colcon build --packages-select arm_02
                    source install/setup.bash
                    ros2 launch arm_02 arm_sim.launch.py
                
                    T2:
                    cd ~/SnowCron/ros_projects/harsh
                    source install/setup.bash
                    ros2 run arm_02 trajectory_points_act_server