Added jit log stream changing function and some refactor (#65768)
Summary:
Description:
- Have only added `stdout` and `stderr` as possible options from python
API for now. We can do file path passing later maybe.
- Put the class `JitLoggingConfig` in the cpp file as none of its methods were being used outside of this file.
Python API:
`torch._C._jit_set_logging_stream('stdout|stderr')`
C++ API:
`::torch::jit::set_jit_logging_output_stream(ostream);`
Testing:
- Tested python API locally.
- Unit test for the C++ API is written
Fixes https://github.com/pytorch/pytorch/issues/54182
Pull Request resolved: https://github.com/pytorch/pytorch/pull/65768
Reviewed By: mrshenli
Differential Revision: D31291739
Pulled By: ZolotukhinM
fbshipit-source-id: eee72edc20488efad78a01c5b0ed8a132886a08d
