model : add AfmoeForCausalLM support (#16477)
* Add AFMOE model support
* Update to vocab
* Add model sizing
* Undo Rope change for ARCEE model
* Address review comments
* Update modeling code is_sliding -> use_rope, replace hard-coded logic
* Fix AFMOE tokenizer
* Update convert_hf_to_gguf.py
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
* Update convert_hf_to_gguf.py
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
* Update AFMoE tokenizer class identification to be more unique
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Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
