mavlink missing develop dialect

[Jaeyoung-Lim]

Issue details

I wasn't sure if this is the right repository, but posting it here for @vooon 's attention

There has not been a mavlink-gbp-release for Ubuntu focal for a while now, which means that the develop dialect is missing for the mavlink package released over ROS

This is a problem for repositories such as PX4/PX4-SITL_gazebo-classic#840 that uses the develop dialect.

Errors << mavlink_sitl_gazebo:make /github/home/catkin_ws/logs/mavlink_sitl_gazebo/build.make.000.log
In file included from /github/home/catkin_ws/src/PX4-SITL_gazebo/src/gazebo_camera_manager_plugin.cpp:18:
/github/home/catkin_ws/src/PX4-SITL_gazebo/include/gazebo_camera_manager_plugin.h:21:10: fatal error: development/mavlink.h: No such file or directory
   21 | #include <development/mavlink.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/gazebo_camera_manager_plugin.dir/build.make:63: CMakeFiles/gazebo_camera_manager_plugin.dir/src/gazebo_camera_manager_plugin.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:776: CMakeFiles/gazebo_camera_manager_plugin.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:152: all] Error 2
cd /github/home/catkin_ws/build/mavlink_sitl_gazebo; catkin build --get-env mavlink_sitl_gazebo | catkin env -si  /usr/bin/make --jobserver-auth=3,4; cd -

@vooon Would it be possible for a new release on the mavlink-gbp-release so that it contains the develop dialect?

MAVROS version and platform

Mavros: NA
ROS: Noetic
Ubuntu: 20.04

Autopilot type and version

[ ] ArduPilot
[ X] PX4

Problem Description

[vooon]

ros/rosdistro#34088
ros/rosdistro#34087
ros/rosdistro#34086

[Jaeyoung-Lim]

@vooon Thanks!