* test: add unit tests for common utilities from PR #1249
* incorporate review comments specific to tests formatting
* use filesystem API instead of std::system for safer cleanup
* Add ghc/filesystem submodule v1.5.14 for portable C++17 filesystem support
* fix: add cmake/GhcFilesystem.cmake for CI submodule auto-checkout
* incorporate review comment
* incorporate review comment
* refactor: centralize update_env across binaries with unit test added for testing
* removed unused includes suggested by clangd and small cleanup
* use centralized update_env in argparse as well
* review comments incorporated
* move update_env tests closer to common library
* fix: missing common:: prefix in rocprof-sys-sample
* cmake formatting