feat: add express pickup orders

backend/src/main/java/com/linhelp/express/ExpressOfflinePayRequest.java

@@ -0,0 +1,18 @@
+package com.linhelp.express;
+
+import com.linhelp.common.enums.OfflinePayStatus;
+
+import javax.validation.constraints.NotNull;
+
+public class ExpressOfflinePayRequest {
+    @NotNull
+    private OfflinePayStatus status;
+
+    public OfflinePayStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(OfflinePayStatus status) {
+        this.status = status;
+    }
+}