Use shape file in sphereDetection and lightingCalibration

[gregoire-dl]

Description

This PR modifies the structure of the JSON file used for sphere detection.
The new format is compatible with the structure expected by Meshroom, allowing spheres to be displayed directly in the interface.

Features list

• Write JSON shape file in sphereDetection.
• Read JSON shape file in lightCalibration.
• Add shape file semantic for JSON file in SphereDetection software.

[cbentejac]

Working as expected! ⭐⭐⭐⭐⭐

I am not merging it straight away because it makes the "Display Lighting Circle : Sphere Detection" from the 2D Viewer useless, and since the display of the shape is now handled from the Node Editor, it should probably be removed altogether.

[cbentejac]

Actually there's a missing part in this PR: if the "Automatic Sphere Detection" option is disabled, the position of the sphere is supposed to be provided by the user. So we need to add a Circle attribute to replace the "Sphere Center" / "Sphere Radius" attributes, and use the position of the circle in sphereDetection.cpp to write the ouput detection.json accordingly.