v0.1.1: Intel Neural Compressor's dynamic, post-training and aware-training quantization support

With this release, we enable Intel Neural Compressor v1.7 PyTorch dynamic, post-training and aware-training quantization for a variety of NLP tasks. This support includes the overall process, from quantization application to the loading of the resulting quantized model. The latter being enabled by the introduction of the IncQuantizedModel class.