Add nativert benchmark (#159922)
Summary:
Add NativeRT as an option in the PT2 OSS benchmark
```
python ./benchmarks/dynamo/huggingface.py --performance --inference --export-nativert
python ./benchmarks/dynamo/timm_models.py --performance --inference --export-nativert
python ./benchmarks/dynamo/torchbench.py --performance --inference --export-nativert
```
X-link: https://github.com/pytorch/pytorch/pull/159922
Approved by: https://github.com/angelayi
Reviewed By: henryoier
Differential Revision: D79867666
fbshipit-source-id: 4febdc2c579ef262679b94f0a0b4dfa75d1a8ed7
