[rocprofiler-systems] Add cached demangler and replace old demangle (#2135)

* Add cached demangler and replace old

* Add unit tests

* Applied suggestions from code review

* Applied suggestions from code review

projects/rocprofiler-systems/source/tests/CMakeLists.txt

@@ -22,9 +22,9 @@
 
 add_executable(
     rocprof-sys-unit-tests
-    dummy.cpp
     $<TARGET_OBJECTS:lib-common-tests>
     $<TARGET_OBJECTS:trace-cache-tests>
+    $<TARGET_OBJECTS:demangler-tests>
 )
 
 target_link_libraries(

projects/rocprofiler-systems/source/tests/dummy.cpp

@@ -1,3 +0,0 @@
-#include <gtest/gtest.h>
-
-TEST(first, test) { ASSERT_TRUE(true); }