Add ros2_control as direct dependency (#624)

Only directly using ros2_controllers in semi-binary builds is prone to
breakage

Author: RobertWilbrandt

Universal_Robots_ROS2_Driver.humble.repos

@@ -11,6 +11,10 @@ repositories:
     type: git
     url: https://github.com/ros-industrial/ur_msgs.git
     version: foxy-devel
+  ros2_control:
+    type: git
+    url: https://github.com/ros-controls/ros2_control.git
+    version: humble
   ros2_controllers:
     type: git
     url: https://github.com/ros-controls/ros2_controllers