Lidar intensity field missing distance attenuation dependency

[andbro-ep]

If my analysis is correct while reviewing the code the intensity field is not distance dependent while the reflectivity correctly is (but right now is not correct because intensity is wrong). see

Intensity calculation (missing distance dependency, squared attenuation)

RobotecGPULidar/src/gpu/optixPrograms.cu

Line 190 in d615cd5

intensity *= cosIncidentAngle;

While reflectivity compensate for distance attenuation:

RobotecGPULidar/src/gpu/nodeKernels.cu

Line 132 in d615cd5

ctx->reflectivityF32[returnPointIdx] = ctx->reflectivityAlpha * ctx->mrSamples.intensity[sampleIdx] * distance2;