add support for embedded resource response

[Gummibeer]

As resource links are already supported it would be nice to also support embedded resource responses.

Response::embeddedResource(
    resource: app(SessionSummaryResource::class),
    arguments: ['session_id' => $session_id],
)

I implemented it locally for my own needs as below - for the package it likely needs a little more variations in input. But that works nicely for prompts.

public static function embeddedResource(Resource $resource, array $arguments = []): self
{
    $uri = $resource->uri();
    if ($resource instanceof HasUriTemplate) {
        $uri = strtr(
            $uri,
            collect($arguments)->keyBy(fn (mixed $_, string $key): string => Str::of($key)->start('{')->finish('}'))->all(),
        );
    }

    $text = $resource->handle(new Request($arguments))->content();

    return new self(new EmbeddedResource(
        uri: $uri,
        text: $text,
        mimeType: $resource->mimeType(),
    ));
}

<?php

namespace App\Mcp\Content;

use Laravel\Mcp\Server\Concerns\HasMeta;
use Laravel\Mcp\Server\Contracts\Content;
use Laravel\Mcp\Server\Prompt;
use Laravel\Mcp\Server\Resource;
use Laravel\Mcp\Server\Tool;

class EmbeddedResource implements Content
{
    use HasMeta;

    public function __construct(
        protected string $uri,
        protected string $text,
        protected string $mimeType = 'text/plain',
    ) {}

    public function toTool(Tool $tool): array
    {
        return $this->toArray();
    }

    public function toPrompt(Prompt $prompt): array
    {
        return $this->toArray();
    }

    public function toResource(Resource $resource): array
    {
        return $this->toArray();
    }

    public function __toString(): string
    {
        return $this->text;
    }

    public function toArray(): array
    {
        return $this->mergeMeta([
            'type' => 'resource',
            'resource' => [
                'uri' => $this->uri,
                'text' => $this->text,
                'mimeType' => $this->mimeType,
            ],
        ]);
    }
}