[Onnxifi] Allow adding timeout for OnnxifOp run (#40081)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/40081
Adding the functionality to enable timeout of OnnxifiOp run. In the case of backend hanging, it can error out quickly.
Test Plan:
```
buck test glow/fb/test:test_onnxifinnpi -- test_timeout
```
Reviewed By: jackm321
Differential Revision: D22064533
fbshipit-source-id: 25487287c10ab217eb95692f09d48e13e19436ab
