Add a capture::handle() function to k4a.hpp (#626)
Add a capture::handle() function to k4a.hpp (#626)

* Add a capture::handle() function

* Add comments to ::handle() functions

* Fix clangformat

microsoft/Azure-Kinect-Sensor-SDK,microsoft/Azure-Kinect-Sensor-SDK,microsoft/Azure-Kinect-Sensor-SDK,microsoft/Azure-Kinect-Sensor-SDK,microsoft/Azure-Kinect-Sensor-SDK,microsoft/Azure-Kinect-Sensor-SDK