Fix build error (ROS2 Foxy)

[CruxDevStuff]

colcon build fails with error

In file included from /home/repos/ld_ws/rf2o_laser_odometry/src/CLaserOdometry2DNode.cpp:18:
/home/repos/ld_ws/rf2o_laser_odometry/include/rf2o_laser_odometry/CLaserOdometry2DNode.hpp:9:10: fatal error: tf2_geometry_msgs/tf2_geometry_msgs.hpp: No such file or directory
    9 | #include <tf2_geometry_msgs/tf2_geometry_msgs.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

Fix
update header extension
<tf2_geometry_msgs/tf2_geometry_msgs.hpp> to "tf2_geometry_msgs/tf2_geometry_msgs.h"

I'm not sure if this happens for everyone(?)

[brendoncintas]

It happens for everyone. #37 - my pull request, addresses the same problem.