Fully integrate AKS-MCP with the CLI Agent for AKS

[julia-yin]

Allow customers using the CLI Agent for AKS to easily enable the AKS MCP server locally.

Requirements:

• HolmesGPT to support MCP servers over stdio/HTTP
• CLI Agent is enabled by default on AKS-MCP - install if it's not already present
• Ensure that AKS MCP server is configured locally and tools are accessible by the CLI Agent
• Evals to ensure no regression in moving from built-in toolsets to AKS MCP tools

Future plan:

• Enable remote-hosted MCP server inside AKS cluster option