Add tests that models can be loaded without errors in gz-sim

[traversaro]

No description provided.

[Nicogene]

The CI is failing unfortunately

Run export GZ_SIM_RESOURCE_PATH=$GZ_SIM_RESOURCE_PATH:${GITHUB_WORKSPACE}/install/share:${GITHUB_WORKSPACE}/install/share/ergocub/robots
  export GZ_SIM_RESOURCE_PATH=$GZ_SIM_RESOURCE_PATH:${GITHUB_WORKSPACE}/install/share:${GITHUB_WORKSPACE}/install/share/ergocub/robots
  gz-sim-yarp-plugins-check-model --model-uri model://ergoCubGazeboV1
  gz-sim-yarp-plugins-check-model --model-uri model://ergoCubGazeboV1_minContacts
  gz-sim-yarp-plugins-check-model --model-uri model://ergoCubGazeboV1_1
  gz-sim-yarp-plugins-check-model --model-uri model://ergoCubGazeboV1_1_minContacts
  gz-sim-yarp-plugins-check-model --model-uri model://ergoCubGazeboV1_2
  gz-sim-yarp-plugins-check-model --model-uri model://ergoCubGazeboV1_2_minContacts
  shell: /usr/bin/bash -l {0}
  env:
    INPUT_RUN_POST: true
    CONDA: /usr/share/miniconda3
    CONDA_PKGS_DIR: /home/runner/conda_pkgs_dir
Error: Process completed with exit code 1.

cc @traversaro

[traversaro]

Thanks, I need to check locally to understand what is going on, unfortunatly I am a bit out of time in the next days, if you want feel free to close, we can reopen if necessary.