llama : add AWQ for llama, llama2, mpt, and mistral models (#4593)

llama : add AWQ for llama, llama2, mpt, and mistral models (#4593)

* update: awq support llama-7b model

* update: change order

* update: benchmark results for llama2-7b

* update: mistral 7b v1 benchmark

* update: support 4 models

* fix: Readme

* update: ready for PR

* update: readme

* fix: readme

* update: change order import

* black

* format code

* update: work for bot mpt and awqmpt

* update: readme

* Rename to llm_build_ffn_mpt_awq

* Formatted other files

* Fixed params count

* fix: remove code

* update: more detail for mpt

* fix: readme

* fix: readme

* update: change folder architecture

* fix: common.cpp

* fix: readme

* fix: remove ggml_repeat

* update: cicd

* update: cicd

* uppdate: remove use_awq arg

* update: readme

* llama : adapt plamo to new ffn

ggml-ci

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Co-authored-by: Trần Đức Nam <redacted>
Co-authored-by: Le Hoang Anh <redacted>
Co-authored-by: Georgi Gerganov <redacted>