feat(sip): 添加选择订单功能

- 在 OrderDeliveryController 中新增 selectOrder 方法
- 映射到 /selectOrder 路径
- 返回 selectOrder 页面视图

ruoyi-sip/src/main/java/com/ruoyi/sip/controller/OrderDeliveryController.java

@@ -40,6 +40,11 @@ public class OrderDeliveryController extends BaseController
     {
         return prefix + "/delivery";
     }
+    @GetMapping("/selectOrder")
+    public String selectOrder()
+    {
+        return prefix + "/selectOrder";
+    }
     @RequiresPermissions("manage:delivery:view")
     @GetMapping("/import/{id}")
     public String importView(@PathVariable("id") Long id, ModelMap mmap)