Fix compilation errors for new RViz with Qt6

[cosmicog]

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Basic Info

Info	Answer
Primary OS tested on	Ubuntu 24.04
ROS Distro	Rolling
Robotic platform tested on	Unfortunately no robot

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Description

• We have talked about the compiling errors here: Added parameter check_min_dist_and_heading_precisely #808
  In slam_toolbox_common.cpp:24:

  #include "rclcpp/rclcpp/qos.hpp"

  was working when I used native Rolling, but not in docker (I probably used the wrong image), but still, I changed it to:

  #include "rclcpp/qos.hpp"

• All other changes are in the CMakeLists.txt. I decided to break my native Rolling instead of finding a correct image (We all are lazy), and built the latest rviz from source. After that, Qt5_FOUND errors were gone. Other version mismatch errors appeared and I fixed them.

  To differentiate them from their looks, I use Fusion style theme for Qt6 apps, and another dark theme for Qt5 apps;

  On the left, RViz on Rolling with Qt6, and on the right, RViz on Jazzy with Qt5:

  

Future work that may be required

I don't have time to test with a rolling robot, but it should work as well as how a robot on rolling version works 🙃 OR maybe this change is not enough for Qt6 upgrade, but still, it is better than before. Now, at least, it compiles and I was able to add the SlamToolboxPlugin panel to RViz.

Note

Since you squashed the changes from my previous PR (above), the commit history of this PR from my fork includes those commits. You are probably used to this but I wanted to include the explanation, just in case.

[SteveMacenski]

Thanks so much! I just haven't gotten around to it this yet so I appreciate the help!