Feature/mcp server pr2

[dolliecoder]

What type of PR is this?

/kind feature

What this PR does / why we need it:
This PR implements the K8s Client & Daemon Discovery Tool (get_kmesh_daemon_pods), the overall Model Context Protocol (MCP) Server integration roadmap.

For AI agents to diagnose Kmesh effectively via MCP (e.g., fetching daemon logs, checking authz status, or dumping xDS configs in future PRs), they must first know which daemon pods are actively running in the cluster.

This PR:

1. Adds a new mcp/tools/daemon package.
2. Registers the get_kmesh_daemon_pods tool to the MCP server.
3. Leverages Kmesh's internal utils.CreateKubeClient() to securely query the Kubernetes API for all active pods in the kmesh-system namespace.
4. Formats the data (Pod Name, Node, Status, and IP) so AI agents can parse it and target specific pods dynamically.

Which issue(s) this PR fixes:
Fixes #1918

Special notes for your reviewer:
This tool reuses the existing kmeshctl utility functions (utils.KmeshNamespace, utils.KmeshLabel, and utils.CreateKubeClient) to ensure the K8s API authentication behaves identically to the rest of the CLI.

Does this PR introduce a user-facing change?:

Added the `get_kmesh_daemon_pods` tool to the Kmesh MCP server, allowing AI agents to dynamically discover active daemon pods in the cluster.

[kmesh-bot]

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