C++ headers for std::hash, operator==, operator!= (#833)

* C++ headers for std::hash, operator==, operator!=

* std::hash specializations for some HSA types

source/lib/rocprofiler-sdk/counters/tests/core.cpp

@@ -35,6 +35,7 @@
 #include <rocprofiler-sdk/fwd.h>
 #include <rocprofiler-sdk/registration.h>
 #include <rocprofiler-sdk/rocprofiler.h>
+#include <rocprofiler-sdk/cxx/operators.hpp>
 
 #include <fmt/core.h>
 #include <gtest/gtest.h>
@@ -342,18 +343,6 @@ private:
 }  // namespace hsa
 }  // namespace rocprofiler
 
-bool
-operator==(rocprofiler_dim3_t lhs, rocprofiler_dim3_t rhs)
-{
-    return std::tie(lhs.x, lhs.y, lhs.z) == std::tie(rhs.x, rhs.y, rhs.z);
-}
-
-bool
-operator==(rocprofiler_agent_id_t lhs, rocprofiler_agent_id_t rhs)
-{
-    return (lhs.handle == rhs.handle);
-}
-
 namespace
 {
 struct expected_dispatch