[rocprofiler-systems] Implement GTest/GMock integration for unit testing (#1777)

* googletest project set up

---------

Co-authored-by: Aleksandar Djordjevic <adjordje@amd.com>
Co-authored-by: Milan Radosavljevic <milan.radosavljevic@amd.com>

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

@@ -0,0 +1,31 @@
+# MIT License
+#
+# Copyright (c) 2025 Advanced Micro Devices, Inc. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+add_executable(rocprof-sys-unit-tests dummy.cpp)
+
+target_link_libraries(
+    rocprof-sys-unit-tests
+    PRIVATE rocprofiler-systems-googletest-library
+)
+
+include(GoogleTest)
+gtest_discover_tests(rocprof-sys-unit-tests)

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

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