* Set BIGDL_IMPORT_IPEX default to true, i.e., auto import IPEX for XPU. * Remove import intel_extension_for_pytorch as ipex from GPU example. * Add support for bigdl-core-xe-21.
* Support directly loading GPTQ models from huggingface * fix style * fix tests * change example structure * address comments * fix style * init * address comments * add examples * fix style * fix style * fix style * fix style * update * remove * meet comments * fix style --------- Co-authored-by: Yang Wang <yang3.wang@intel.com>