refactor(core): enhance SDK structure and documentation

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/Requests/Cards/GetCardsRequest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Apoloz\AlfaBank\Requests\Cards;
+
+use Apoloz\AlfaBank\Data\Cards\CardData;
+use Saloon\Enums\Method;
+use Saloon\Http\Request;
+use Saloon\Http\Response;
+use Spatie\LaravelData\DataCollection;
+
+class GetCardsRequest extends Request
+{
+    protected Method $method = Method::GET;
+
+    public function resolveEndpoint(): string
+    {
+        return '/api/pp/v1/cards';
+    }
+
+    public function createDtoFromResponse(Response $response): DataCollection
+    {
+        return CardData::collect($response->json('cards'), DataCollection::class);
+    }
+}