feat: 增强玩家管理功能，集成接入站点权限控制

在多个玩家相关控制器中引入 AdminSiteScope，确保管理员在执行操作前具备相应的接入站点权限。更新 Player 相关请求以支持 site_code 参数，增强权限验证逻辑，确保系统安全性与灵活性。同时，新增 AdminUser 模型方法以获取可访问的站点 ID 列表，优化权限管理。

app/Http/Requests/Admin/AdminIntegrationSiteStoreRequest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Requests\Admin;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+final class AdminIntegrationSiteStoreRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /** @return array<string, mixed> */
+    public function rules(): array
+    {
+        return [
+            'code' => ['required', 'string', 'max:64', 'regex:/^[a-z0-9][a-z0-9_-]*$/', Rule::unique('admin_sites', 'code')],
+            'name' => ['required', 'string', 'max:128'],
+            'currency_code' => ['sometimes', 'string', 'max:16'],
+            'status' => ['sometimes', 'integer', 'in:0,1'],
+            'wallet_api_url' => ['nullable', 'string', 'max:512'],
+            'wallet_debit_path' => ['sometimes', 'string', 'max:128'],
+            'wallet_credit_path' => ['sometimes', 'string', 'max:128'],
+            'wallet_balance_path' => ['sometimes', 'string', 'max:128'],
+            'wallet_timeout_seconds' => ['sometimes', 'integer', 'min:1', 'max:120'],
+            'iframe_allowed_origins' => ['nullable', 'array'],
+            'iframe_allowed_origins.*' => ['string', 'max:512'],
+            'lottery_h5_base_url' => ['nullable', 'string', 'max:512'],
+            'notes' => ['nullable', 'string', 'max:5000'],
+        ];
+    }
+}