[trainer, megatron, tool] fix: megatron not support memory profiler

[maijia-cwh]

What does this PR do?

fix megatron not support memory profiler

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[gemini-code-assist]

Code Review

This pull request adds support for the memory profiler in Megatron workers by introducing start_profile, stop_profile, and dump_memory_snapshot methods. The changes are a good step towards integrating profiling capabilities. My main feedback is on improving the error handling in dump_memory_snapshot to prevent silently ignoring all exceptions, which would make debugging much easier.

[ISEEKYAN]

@maijia-cwh Thanks for the contribution, please fix the CI, including check-title and pre-commit, so I can merge it.