Allowing MCP server to discover and call available Angular schematics

### Command

mcp

### Description

Today, when I'm using LLM with the Angular MCP server, code is generated directly by the LLM but for some cases it would provide better result if it is using the available schematic (Angular ones or external libraries ones).

### Describe the solution you'd like

When using the Angular MCP server, I would expect LMM to be aware of which Angular schematics are available in the project (the ones from Angular + the ones from external libraries).
I would love that the Angular MCP server is able to read the schematic description and input, to know if it should use it or not and how to call it.

### Describe alternatives you've considered

_No response_

从 Angular CLI 的 `mcp` 命令开始，跟踪 MCP 服务器如何暴露工具。检查 Angular schematics 和外部 schematics 是如何描述和调用的；完成标准是服务器能够发现可用的项目 schematics、暴露它们的输入，并调用选定的 schematic。

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