feat(inner): 添加 InternalCouponController 类

- 新增 InternalCouponController 类用于处理优惠券发放相关请求- 实现了 orderPaySuccess 方法，用于处理订单支付成功后的优惠券发放逻辑
- 添加了必要的

src/main/java/com/xynet/marketing/controller/inner/InnerCouponController.java

@@ -0,0 +1,30 @@
+package com.xynet.marketing.controller.inner;
+
+import com.xynet.marketing.utils.R;
+import com.xynet.marketing.utils.collections.map.JHashMap;
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+/**
+ * 优惠券的发放
+ *
+ * @author hechunping
+ * @date 2025/2/26
+ */
+@RestController
+@RequestMapping("inner/coupon")
+@AllArgsConstructor
+@Slf4j
+@CrossOrigin(origins = "*")
+public class InnerCouponController {
+
+    public R orderPaySuccess(@RequestBody JHashMap<String, Object> param, @RequestHeader Map<String, String> headers) {
+
+
+        return R.ok();
+    }
+
+}