SWDEV-458943 - Implement std::mutex based monitor

Implement std::mutex based monitor that has much
simpler logics than legacy monitor.
Create DEBUG_CLR_USE_STDMUTEX_IN_AMD_MONITOR to
toggle them.
If DEBUG_CLR_USE_STDMUTEX_IN_AMD_MONITOR = false
  (by default), use legacy monitor;
If DEBUG_CLR_USE_STDMUTEX_IN_AMD_MONITOR = true,
  use std::mutex based monitor.
If no perf drop of stl::mutex based monitor,
legacy one will be removed later.

Change-Id: I1d21368ff462477d3238d71e4e2a1a7d6b9167ad

rocclr/utils/flags.hpp

@@ -252,7 +252,9 @@ release(bool, DEBUG_HIP_GRAPH_DOT_PRINT, false,                               \
 release(bool, HIP_ALWAYS_USE_NEW_COMGR_UNBUNDLING_ACTION, false,              \
         "Force to always use new comgr unbundling action")                    \
 release(bool, DEBUG_HIP_KERNARG_COPY_OPT, true,                               \
-         "Enable/Disable multiple kern arg copies")                           \
+        "Enable/Disable multiple kern arg copies")                            \
+release(bool, DEBUG_CLR_USE_STDMUTEX_IN_AMD_MONITOR, false,                   \
+        "Use std::mutext in amd::monotor")                                    \
 
 namespace amd {