Use reusable workflow for CI

[Cakem1x]

This PR changes mesh_tools to use a central reusable workflow file.
This change eases maintenance for our CI workflows, since multiple repos can now use the same workflow (before, we would need to maintain duplicated workflow files).

[Cakem1x]

Hm, for some reason, the build fails when specifying the pkgs to build explicitly:
Failure:
bash -c,source /opt/ros/humble/setup.sh && colcon build --packages-up-to hdf5_map_io label_manager mesh_msgs mesh_msgs_conversions mesh_msgs_hdf5 mesh_msgs_transform mesh_tools rviz_mesh_tools_plugins --event-handlers=console_cohesion+ --symlink-install:

  CMake Error at /__w/mesh_tools/mesh_tools/ros_ws/install/lvr2/lib/cmake/lvr2/LVR2Config.cmake:73 (find_package):
    By not providing "FindVTK.cmake" in CMAKE_MODULE_PATH this project has
    asked CMake to find a package configuration file provided by "VTK", but
    CMake did not find one.
  
    Could not find a package configuration file provided by "VTK" with any of
    the following names:
  
      VTKConfig.cmake
      vtk-config.cmake
  
    Add the installation prefix of "VTK" to CMAKE_PREFIX_PATH or set "VTK_DIR"
    to a directory containing one of the above files.  If "VTK" provides a
    separate development package or SDK, be sure it has been installed.
  Call Stack (most recent call first):
    CMakeLists.txt:22 (find_package)
  
  
  -- Configuring incomplete, errors occurred!
  See also "/__w/mesh_tools/mesh_tools/ros_ws/build/hdf5_map_io/CMakeFiles/CMakeOutput.log".
  ---
  --- stderr: hdf5_map_io
  CMake Error at /__w/mesh_tools/mesh_tools/ros_ws/install/lvr2/lib/cmake/lvr2/LVR2Config.cmake:73 (find_package):
    By not providing "FindVTK.cmake" in CMAKE_MODULE_PATH this project has
    asked CMake to find a package configuration file provided by "VTK", but
    CMake did not find one.
  
    Could not find a package configuration file provided by "VTK" with any of
    the following names:
  
      VTKConfig.cmake
      vtk-config.cmake
  
    Add the installation prefix of "VTK" to CMAKE_PREFIX_PATH or set "VTK_DIR"
    to a directory containing one of the above files.  If "VTK" provides a
    separate development package or SDK, be sure it has been installed.
  Call Stack (most recent call first):
    CMakeLists.txt:22 (find_package)
  
  
  ---
  Failed   <<< hdf5_map_io [0.95s, exited with code 1]

success (old CI):
bash -c,source /opt/ros/humble/setup.sh && colcon build --event-handlers=console_cohesion+ --symlink-install, which builds hdf5_map_io successfully (among other pkgs).

@amock any idea why? I've found this commit that talks about VTK deps in lvr2.

[amock]

About the VTK thing: As far as I know, VTK is required only for the lvr2_viewer target, which is currently not even compiled by default. However, it is written in the "LVR2Config.cmake.in". So fixing this file would probably solve this issue.

I won't be able to get to it for about 2-3 weeks. But I can accept PRs :)

Edited: If VTK is really nowhere used in the lvr2 core library, it probably also can removed from the package.xml

[Cakem1x]

Hmm, the point where the build breaks is when a package that depends on lvr2 is being built. Then, the lvr2's LVR2Config.cmake (from within the install dir, ros_ws/install/lvr2/lib/cmake/lvr2/LVR2Config.cmake:73) fails, since it includes a find_package(VTK REQUIRED).
I think this comes from lvr2's LVR2Config.cmake.in:49 (as you wrote).

I suppose we should either depend on VTK via package.xml (if a rosdep key exists for libvtk), or make this dependency truly optional (maybe it is sufficient to remove the REQUIRED keyword).

[Cakem1x]

@mklpiening @amock
CI is fixed via the PR mentioned last week. Can we merge this?

[amock]

@mklpiening @amock CI is fixed via the PR mentioned last week. Can we merge this?

Looks good to me