Support collection of counters with rocprofiler

[jordap]

This is an initial prototype to test the collection of hardware counters using rocprofiler's device mode.

It introduces the pyrocprofiler Python module to call rocprofiler using a small header-only wrapper around the API for device mode (pyrocprofiler/device_session.hpp).

There is also a standalone Prometheus collector that uses the pyrocprofiler module that still works outside of omniwatch for initial testing.

Pending tasks:

• Integrate collector with omniwatch monitor
• Read counters from omniwatch configuration file
• Sample all GPUs (currently only samples GPU 0)
• Some sort of testing infrastructure
• Documentation, proper headers/copyright, etc.
• Ensure rocprofiler sessions are properly destroyed (and understand what happens to sessions if not properly destroyed)

More details about rocprofiler's device mode API: https://rocm.docs.amd.com/projects/rocprofiler/en/docs-6.0.0/doxygen/docBin/html/group__device__profiling.html

I used the following example to understand how to call the device mode API: https://github.com/ROCm/rocprofiler/blob/amd-master/samples/profiler/device_profiling_sample.cpp

[jordap]

I updated this branch to match the most recent changes in Omnistat.

Still need to manually set HSA_TOOLS_LIB to get the counters until rocprofiler is fixed (SWDEV-465681), and update the build of the pyrocprofiler module to match omnistat.