Support sleep and destroy deepep buffer

[RunningLeon]

Motivation

Require PR: DeepLink-org/DLBlas#96

1. sync before sleep and after wakeup
2. support destroy deepep buffer
3. dlblas>=0.0.7

Modification

Please briefly describe what modification is made in this PR.

BC-breaking (Optional)

Does the modification introduce changes that break the backward-compatibility of the downstream repositories?
If so, please describe how it breaks the compatibility and how the downstream projects should modify their code to keep compatibility with this PR.

Use cases (Optional)

If this PR introduces a new feature, it is better to list some use cases here, and update the documentation.

Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit tests to ensure the correctness.
3. If the modification has a dependency on downstream projects of a newer version, this PR should be tested with all supported versions of downstream projects.
4. The documentation has been modified accordingly, like docstring or example tutorials.

[lvhan028]

May upgrade dlblas after dlblas is released.

[RunningLeon]

May upgrade dlblas after dlblas is released.

Will test later.

[Copilot]

Pull request overview

This PR adds support for explicit destruction of DeepEP buffer during the sleep operation to properly manage GPU memory resources. The changes introduce a sleep/wakeup state management mechanism and modify the sleep method to be asynchronous to coordinate buffer destruction across distributed workers.

Changes:

• Added SleepWakeupState dataclass to manage sleep/wakeup synchronization using asyncio events
• Converted sleep() method to async to support coordinated buffer cleanup across distributed processes
• Integrated explicit DeepEP buffer destruction by calling DeepEPBuffer.destroy() during sleep if available
• Added set_explicitly_destroy() call during DeepEP initialization to enable explicit cleanup mode

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
lmdeploy/pytorch/engine/model_agent/agent.py	Added SleepWakeupState for synchronization, converted sleep to async, added DeepEP buffer destruction logic, and sleep/wakeup coordination
lmdeploy/pytorch/engine/executor/base_worker.py	Updated sleep method to be async and await the model agent's sleep
lmdeploy/pytorch/engine/executor/base.py	Updated sleep method signature to be async in the base interface
lmdeploy/pytorch/backends/cuda/moe/default.py	Added call to set_explicitly_destroy() during DeepEP initialization
lmdeploy/pytorch/backends/cuda/moe/blocked_fp8.py	Added call to set_explicitly_destroy() during DeepEP initialization

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[RunningLeon]

TODO: uni and mp executor may implement