Rename Omnitrace to ROCm Systems Profiler (#4)

The Omnitrace program is being renamed. 

Full name: "ROCm Systems Profiler"
Package name: "rocprofiler-systems"
Binary / Library names: "rocprof-sys-*"

---------
Co-authored-by: Xuan Chen <xuchen@amd.com>
Signed-off-by: David Galiffi <David.Galiffi@amd.com>

source/lib/core/gpu.hpp

@@ -1,6 +1,6 @@
 // MIT License
 //
-// Copyright (c) 2022 Advanced Micro Devices, Inc. All Rights Reserved.
+// Copyright (c) 2022-2024 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
@@ -22,7 +22,7 @@
 
 #pragma once
 
-namespace omnitrace
+namespace rocprofsys
 {
 namespace gpu
 {
@@ -38,4 +38,4 @@ rsmi_device_count();
 void
 add_hip_device_metadata();
 }  // namespace gpu
-}  // namespace omnitrace
+}  // namespace rocprofsys