feat: ProductCategory클래스 Enums디렉토리에 추가

> view 경로 수정

Author: kch2234

src/main/java/com/moaguide/refactor/enums/ProductCategory.java

@@ -0,0 +1,5 @@
+package com.moaguide.refactor.enums;
+
+public enum ProductCategory {
+    ALL,BUILDING,MUSIC,COW,ART,CONTENTS
+}