[quant][ao_migration] nn.intrinsic.quantized migration to ao (#86172)
All quantization-related modules are being migrated to `torch.ao`. This migrates the `nn.intrinsic.quantized`. Please, see the [tracker](https://github.com/pytorch/pytorch/issues/81667) for the timeline.
```
python test/test_quantization.py -- TestAOMigrationNNIntrinsic
```
Internal:
```
buck2 test @mode/dev-nosan //caffe2/test:quantization -- TestAOMigrationNNIntrinsic
```
Differential Revision: [D39425515](https://our.internmc.facebook.com/intern/diff/D39425515/)
Differential Revision: [D39425515](https://our.internmc.facebook.com/intern/diff/D39425515)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/86172
Approved by: https://github.com/jerryzh168
