[feat] Enable saving properties from multiple Lidars

We want to be able to save the transform and other functionnality applied to a Lidar.

We tried to use "Save/Load paraview state" to save all the current open sources. But there is a bug to load a ProxyProperty (transform) of a proxyProperty (Interpreter) of a proxy (Reader or stream). The reapply of the transform does not work and may crash when we try to access it (https://gitlab.kitware.com/LidarView/lidarview-core/-/blob/master/ApplicationComponents/lqHelper.cxx#L256)

To restore a transform we add the "Save/Load Lidar State" button to each sensorsWidget in the sensor List. It allows the user to save some properties of the specific Lidar into a json file or to load the properties from a json file to a specific Lidar

changed the description

@nick.laurenson @arnaud.billon PTAL

approved this merge request

mentioned in merge request VeloView-Velodyne!96 (merged)

mentioned in commit c73c6738

merged