[io] Check for IR stream capability before creating it in `real_sense_2_grabber` for D415

Describe the bug

When trying to obtain point clouds from the Intel RealSense D415, in RealSense2Grabber::start(), I get an exception that "Stream is not supported." This comes from the check here. Specifically, when checking the RS2_STREAM_INFRARED stream, realsense throws a runtime error (rs_pipeline.hpp L69), since the D415 has no infrared stream.

Environment

• OS: Windows 10
• Compiler: cl 19.24.28314
• PCL Version: 1.10.0

I am able to circumvent the issue by simply taking out the RS2_STREAM_INFRARED line, and everything works successfully (this is obviously not a general enough solution:

if ( prof.get_stream ( RS2_STREAM_COLOR ).format ( ) != RS2_FORMAT_RGB8 ||
      prof.get_stream ( RS2_STREAM_DEPTH ).format ( ) != RS2_FORMAT_Z16)
      THROW_IO_EXCEPTION ( "This stream type or format not supported." );

Start in io/src/real_sense_2_grabber.cpp around the check linked in RealSense2Grabber::start(), and inspect how RS2_STREAM_INFRARED is requested. Reproduce the D415 failure if possible, then verify stream capability before creating or validating that stream. Done means a D415 can start without the “Stream is not supported” exception while supported color and depth streams remain validated.