Support double quant tuning

[yiliu30]

Type of Change

feature
API changed or not: add API to get the default set

Description

from neural_compressor.torch.quantization import TuningConfig, autotune, get_rtn_double_quant_config_set
def eval_acc_fn(model) -> float:
    ...

custom_tune_config = TuningConfig(config_set=get_rtn_double_quant_config_set())
q_model = autotune(model=build_simple_torch_model(), tune_config=custom_tune_config, eval_fns=eval_acc_fn)

How has this PR been tested?

Pre-CI

Dependency Change?

None