[kineto] ClientInterface stub for ProfilerKineto (#75525)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/75525
Creating injection point for ProfilerKineto to attach global callback. We'll disable the KinetoObserver via `'kineto.disable_libkineto_observer=1'` and enable this to swap out the implementations.
Test Plan:
1. add temporary logs in the stub + registration method
2. `buck build mode/opt //kineto/libkineto/fb/integration_tests:trace_tester --config 'kineto.disable_libkineto_observer=1' --config "kineto.enable_libkineto_client=1`
3. `./buck-out/gen/kineto/libkineto/fb/integration_tests/trace_tester --test_ondemand --libkineto_runner_iterations 1000000` should see log for registration
4. `dyno gputrace` should see log for start/stop
Reviewed By: aaronenyeshi, robieta
Differential Revision: D35456304
fbshipit-source-id: c0a23a57181818e5a0ee495410163d90874355a9
(cherry picked from commit 5dfc723937356693fc041f5a011161e83a8d2528)
