Log cudagraphify timings to dynamo_timed (#143220)
Summary:
this adds some new dynamo_timed calls in cudagraph_trees, primarily with the aim to add cudagraph-related timing to scuba. Things to note:
* Uses the changes in https://github.com/pytorch/pytorch/pull/141919 to log "runtime" entries
* The logging for chromium/tlparse/scuba relies on us providing a compile_id since it's not available in the environment. A lot of the changes here are just passing around the compile_id
* I believe the spirit of the scuba logging is to capture the overheads of `torch.compile`. Therefore, I'm not adding _every_ dynamo_timed to scuba. For example, "run_eager" is the first real execution of the inductor graph -- it's not cudagraph overhead, per se. Watch out for the two instances of `dynamo_compile_runtime_column_us="runtime_cudagraphify_time_us"`. Those are the spots I believe are _extra_ overhead we'd contribute to torch.compile.
X-link: https://github.com/pytorch/pytorch/pull/143220
Approved by: https://github.com/eellison
Reviewed By: jovianjaison
Differential Revision: D70817601
fbshipit-source-id: 147ddccb31c15bd9ff13d86d862a0bd4012eec9b
