Hi,
This PR aims at implementing the first iteration for `uname` using
`uutils`. Couple of things:
* Currently my [PR](https://github.com/uutils/coreutils/pull/5921) to
make the required changes is pending in `uutils` repo.
* I guess the number of flags has to be investigated. Still the tests
cover all of them.
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# Tests + Formatting
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---------
Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>