Add optional RMSNorm support to BitNet quantization (config + layers) (#38087)
* enable optional RMS in BitLinear
* Fix naming
* Import RMS from Llama using config.*
* make fix-copies
* ran CI loop
* remove default BitNetQuantConfig values
* Fix BitNetQuantConfig to be Optional
* Fix config docstrings to match Optoinal
* Edit docstrings to match standards
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Co-authored-by: steinmetzc <codysteinmetz7@gmail.com>
Co-authored-by: codys12 <steinmetzc@dh-mgmt4.hpc.msoe.edu>
Co-authored-by: Mohamed Mekkouri <93391238+MekkCyber@users.noreply.github.com>