feat: mcp bundle tool integration

[soyuka]

Q	A
Branch?	main
Tickets	na
License	MIT
Doc PR	needed

Rework of #7458

Now with a simpler approach, this gives the ability to add McpTool (upcoming McpResource) to any API Platform environment giving access to:

• automatic input JSON Schema's (waiting for feat: Add output schema support to MCP tools modelcontextprotocol/php-sdk#153 for output schema compatiblity)
• automatic structured content
• reuses the Symfony serializer under the hood (with all the capabilities of API Platform including optional iris using item_uri_template)
• allows to return a custom CallToolResult (from the php-sdk itself for images, sound etc.)
• ability to reuse Symfony validation constraints as usual
• works with doctrine entities if needed (calls the provider and the processor on demand)
• integrates with the symfony security features

TODO:

• test with #[McpTool] attribute
• test using an entity
• test custom CallToolResult content
• test validation
• test #[McpResource]

Because MCP uses JSON-RPC under the hood with some particular response objects (from php-sdk) we can not change returned headers yet (we'll work on an extension point).