Dynamic Quantized Linear Module (#23128)
Summary:
- ~~Add a unit test for the Dynamic Quantized Linear operator (```torch.fbgemm_linear_quantize_weight```, ```torch.fbgemm_pack_quantized_matrix```, and ```torch.fbgemm_linear_int8_weight```) in ```test_quantized.py```.~~ Move this to D16404027 for a separate review.
- Add the Dynamic Quantized Linear module in ```torch/nn/quantized/modules/linear.py```. ~~This is in a rudimentary stage. Will add more functions later~~.
- Add the torch.quantize logic (prepare, eval, convert) for dynamic quantization.
- Add a unit test for the Dynamic Quantized Linear module in ```test_nn_quantized.py```.
- Add a unit test for the Model-level Quantization API
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23128
ghstack-source-id: 88257232
Differential Revision: D16258664
fbshipit-source-id: 4be3ac39ee27c088b341c741d3f09f51d5a23ef0
