Expose TIMESTAMP_SCALE from BufferAggregator.cpp as a 3DTelemedicine.cfg config file parameter

The TIMESTAMP_SCALE is a Fusion parameter similar to the MaximumTimeSeparationOfSubFrames calibration parameter. Both define the number of microseconds that should be accepted between two frames of different Kinects to consider that the capture is synchronized for a given timepoint.

Ideally, both parameters should be set to 2000.0 given that, with ideal hardware configuration, up to 10 Kinects can be synchronized within that time scale. However, difference in hardware and environment configuration (e.g., sync cable length, temperature) might affect the sync signals requiring that value to be raised. IMPORTANT: the need for raising this value often indicates that something hardware-related is not ideal with the 3DTM system.

Currently, TIMESTAMP_SCALE is hardcoded to 2000.0 in the Networking/BufferAggregator.cpp file and we would like to expose it as a parameter of the [Fusion] section in the 3DTelemedicine.cfg file. This can be achieved by making TIMESTAMP_SCALE a member variable of the BufferAggregator class, and update the value in the DataCaptureNetworkMultiView subclass with the value read from the FusionConfig::current() conf object.

Start with Networking/BufferAggregator.cpp and locate the hardcoded TIMESTAMP_SCALE value and the BufferAggregator class. Then inspect DataCaptureNetworkMultiView and the Fusion section of 3DTelemedicine.cfg, including FusionConfig::current(). Done means TIMESTAMP_SCALE can be configured there instead of remaining hardcoded at 2000.0.