* Rename bigdl/llm to ipex_llm * rm python/llm/src/bigdl * from bigdl.llm to from ipex_llm
* fix tokenizer * fix AutoTokenizer bug * modify code style
* run demo * format code * add llamaindex * add custom LLM with bigdl * update * add readme * begin ut * add unit test * add license * add license * revised * update * modify docs * remove data folder * update * modify prompt * fixed * fixed * fixed