feat(core): 添加 X-SP-ID 解析中间件

- 新增 SpParseMiddleware 类，用于解析请求中的 X-SP-ID 头- 将解析后的 SP ID存入 Hyperf 上下文中，供后续使用
- 此中间件适用于需要根据 SP ID 进行权限控制或日志记录的场景

Signed-off-by: 李东云 <dongyu.li@luxcreo.ai>

src/Middleware/SpParseMiddleware.php

@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * SpParseMiddleware.php@Core
+ *
+ * @author 李东云 <Dongyun.Li@LuxCreo.Ai>
+ * Powered by PhpStorm
+ * Created on 2025/7/9
+ */
+declare(strict_types=1);
+
+namespace Singularity\HDK\Core\Middleware;
+
+use Hyperf\Context\Context;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+final class SpParseMiddleware implements MiddlewareInterface
+{
+
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        $sp = $request->getHeaderLine('X-SP-ID');
+        if (!empty($sp)) {
+            Context::set('sp', $sp);
+        }
+
+        return $handler->handle($request);
+    }
+}