adding metrics dictionary factoring by Create

[ROCm/rocprofiler commit: f7f24de043]

projects/rocprofiler/src/core/metrics.cpp

@@ -0,0 +1,6 @@
+#include "core/metrics.h"
+
+namespace rocprofiler {
+MetricsDict::map_t* MetricsDict::map_ = NULL;
+MetricsDict::mutex_t MetricsDict::mutex_;
+}