refactor(core): enhance SDK structure and documentation

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

src/Data/B2C/B2CPaymentRecipientData.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Apoloz\AlfaBank\Data\B2C;
+
+use Spatie\LaravelData\Data;
+
+class B2CPaymentRecipientData extends Data
+{
+    public function __construct(
+        public string $phone,
+        public float $amount,
+        public string $nspkBankId,
+        public string $sequence,
+        public ?array $name = null, // ['first' => '...', 'last' => '...', 'middle' => '...']
+        public ?string $paymentDescription = null,
+    ) {}
+}