refactor(core): enhance SDK structure and documentation

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

src/Requests/B2C/CreateB2CPaymentRequest.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Apoloz\AlfaBank\Requests\B2C;
+
+use Apoloz\AlfaBank\Data\B2C\B2CPaymentRequestData;
+use Apoloz\AlfaBank\Data\B2C\B2CPaymentResponseData;
+use Saloon\Contracts\Body\HasBody;
+use Saloon\Enums\Method;
+use Saloon\Http\Request;
+use Saloon\Http\Response;
+use Saloon\Traits\Body\HasJsonBody;
+
+class CreateB2CPaymentRequest extends Request implements HasBody
+{
+    use HasJsonBody;
+
+    protected Method $method = Method::POST;
+
+    public function __construct(
+        protected B2CPaymentRequestData $data
+    ) {}
+
+    public function resolveEndpoint(): string
+    {
+        return '/api/b2cpay/jp/v1/payments';
+    }
+
+    protected function defaultBody(): array
+    {
+        return $this->data->toArray();
+    }
+
+    public function createDtoFromResponse(Response $response): B2CPaymentResponseData
+    {
+        return B2CPaymentResponseData::from($response->json());
+    }
+}