transformers safetensors gpt_bigcode text-generation code dataset:bigcode/commitpackft dataset:bigcode/oasst-octopack arxiv:2308.07124 base_model:bigcode/octocoder base_model:quantized:bigcode/octocoder license:bigcode-openrail-m model-index autotrain_compatible text-generation-inference 4-bit gptq region:us