add shuffle action.

[bearslyricattack]

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[gemini-code-assist]

Summary of Changes

Hello @bearslyricattack, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces new documentation for a 'Shuffle' action within the Volcano scheduler. The added content explains the core concept of this task redistribution mechanism, its role in optimizing cluster performance, and provides specific scenarios where it can be effectively utilized to improve resource management and task distribution.

Highlights

• New Feature Documentation: Added comprehensive documentation for the new 'Shuffle' action in the Volcano scheduler, detailing its purpose as a task redistribution mechanism designed to optimize cluster performance.
• Use Cases and Benefits: Outlined key scenarios where the 'Shuffle' action is beneficial, including resource fragment consolidation, load balancing optimization across nodes, and breaking scheduling deadlocks in long-running clusters.

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[gemini-code-assist]

Code Review

This pull request introduces documentation for a new shuffle action, adding detailed explanations in both English and Chinese. The new content is well-structured and clearly outlines the purpose and use cases for this new scheduler action.

[gemini-code-assist]

This paragraph is dense and contains a long sentence. Rewriting it with shorter, more direct sentences would improve clarity and readability.

Suggested change

	Shuffle action is a task redistribution mechanism in the Volcano scheduler, designed to optimize the distribution of running tasks in the cluster. By selectively evicting certain running tasks, it allows these tasks to re-enter the scheduling queue for reallocation, breaking existing resource allocation patterns and optimizing overall cluster performance.
	Shuffle action is a task redistribution mechanism in the Volcano scheduler.
	It is designed to optimize the distribution of running tasks in the cluster by selectively evicting some of them.
	Evicted tasks re-enter the scheduling queue for reallocation.
	This process breaks existing resource allocation patterns and can lead to better overall cluster performance.