[FEAT]: Configure RPC via attributes

[tacman]

Describe the solution you'd like

This is very similar to #70, but uses the more modern PHP 8 attributes.

I started implementing https://github.com/EdouardCourty/mcp-server-bundle but it seemed overkill for my needs, which can be handled with simple JSON-RPC calls. But it's worth look at how tools are defined, as this bundle could also use that approach instead of configuring it in the services.

So instead of

services:
   method-a.service-id:
      class: Method\A\Class
      tags:
       - { name: 'json_rpc_http_server.jsonrpc_method', method: 'method-a' }
       - { name: 'json_rpc_http_server.jsonrpc_method', method: 'method-a-alias' }

class A {
    #[RpcMethod('a', 'a-alias')
    public function MyMethod()...
}

Is your feature request related to a problem ?

• Yes

Additional context

No response

[yoanm]

Interesting idea indeed, I would prefer that one rather than #70 which requires another dependency 👍

I haven't dealt with PHP Attributes yet, but I guess #71 may be used as base.

N.B.: I will unlikely have time to do it on my end, but feel free to contribute, I'll do my best to review your contribution !