Tools for Profiling and Debugging

In the [OpenCL panel discussion](https://youtu.be/sIk6JXRzRDs) at [IWOCL](https://www.iwocl.org/) there were several questions and comments regarding vendor-independent tooling in OpenCL, especially for profiling and debugging. We should add a page to the guide describing functionality in OpenCL for profiling and debugging and consider adding links to tools or other resource pages for profiling and debugging.

Note: we already have a list of OpenCL Development Tools on the [OpenCL Resources Page](https://www.khronos.org/opencl/resources) and the [OpenCL Community Resources Page](https://www.khronos.org/opencl/community-resources/).

Start by reviewing the OpenCL Guide structure and the linked IWOCL panel discussion, then compare the existing OpenCL Resources and OpenCL Community Resources pages. Done means the guide has a page describing OpenCL profiling and debugging functionality, with appropriate links to relevant tools or resource pages.

Written by the indexing model from the issue text.