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>

.gitignore

@@ -46,5 +46,5 @@ _toc.yml
 /.cache
 /.clangd
 /compile_commands.json
-/omnitrace-install.py
-/scripts/omnitrace-install.py
+/rocprof-sys-install.py
+/scripts/rocprof-sys-install.py