Find a way of running visualizer-tests in CI

[traversaro]

I guess you need to set DISPLAY or something similar.

[S-Dafarra]

I guess that the problem is the OpenGL version. In #806 the OpenGL version was

Irrlicht Engine version 1.8.4
 (Build 9200)
Using renderer: OpenGL 1.1.0
GDI Generic: Microsoft Corporation
OpenGL driver version is not 1.2 or better.
Failed to load OpenGL's multitexture extension, proceeding without.
Warning: OpenGL device only has one texture unit. Disabling multitexturing.
GLSL not available.
Resizing window (800 600)

On my PC OpenGL is 4.6.0

[S-Dafarra]

Relevant issue https://github.community/t/i-need-opengl-version-2-0-whereas-windows-lastest-has-opengl-version-1-1-0/17810

[S-Dafarra]

Related comment: https://github.com/conda-forge/idyntree-feedstock/pull/81#issuecomment-2018151627