pytorch integration fixes

[lslusarczyk]

fix ext_oneapi_get_state to work with native graph
add empty method to graph that also supports native graphs path

This will resolve two integration issues

non working queue::ext_oneapi_get_state() showing up as:

Traceback (most recent call last):
  File "/home/lslusarczyk/src/pytorch/benchmarks/dynamo/microbenchmarks/xpu/xpu_graph_launch_overhead.py", line 106, in <module>
    main()
    ~~~~^^
  File "/home/lslusarczyk/src/pytorch/benchmarks/dynamo/microbenchmarks/xpu/xpu_graph_launch_overhead.py", line 99, in main
    graph_t = run_xpu_graph(model, x, args.iters, args.fine_grain_itt)
  File "/home/lslusarczyk/src/pytorch/benchmarks/dynamo/microbenchmarks/xpu/xpu_graph_launch_overhead.py", line 65, in run_xpu_graph
    with torch.xpu.graph(g):
         ~~~~~~~~~~~~~~~^^^
  File "/home/lslusarczyk/src/pytorch/torch/xpu/graphs.py", line 198, in __enter__
    self.xpu_graph.capture_begin(*self.pool)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/home/lslusarczyk/src/pytorch/torch/xpu/graphs.py", line 85, in capture_begin
    super().capture_begin(pool=pool)
    ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
RuntimeError: capture_stream_.queue().ext_oneapi_get_state() == queue_state::recording INTERNAL ASSERT FAILED at "/home/lslusarczyk/src/pytorch/aten/src/ATen/xpu/XPUGraph.cpp":83, please report a bug to PyTorch.

and then not working get_nodes() showing up as

pytorch/torch/xpu/graphs.py:95: UserWarning: The XPU Graph is empty.
This usually means that the graph was attempted to be captured on wrong device or stream.
(Triggered internally at pytorch/aten/src/ATen/xpu/XPUGraph.cpp:106.)
  super().capture_end()

[adamfidel]

Thanks for these changes! However, we are in the process of moving forks for development work. This fork has been mirrored to https://github.com/adamfidel/llvm/tree/pablo/graph-native-recording-prototype-v2-rebase and the native recording branch has been migrated. Could you please move this PR there?

[lslusarczyk]

The functionality of this PR has been addressed in adamfidel#1 and adamfidel#3
Closing