[api] Add maimai2 userPhoto API

src/main/java/icu/samnyan/aqua/api/model/resp/sega/maimai2/PhotoResp.java

@@ -0,0 +1,14 @@
+package icu.samnyan.aqua.api.model.resp.sega.maimai2;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class PhotoResp {
+    private int imageIndex;
+    private int totalImage;
+    private String divData;
+}