型を管理するモジュールを追加

.idea/gradle.xml

@@ -22,6 +22,7 @@
             <option value="$PROJECT_DIR$/feature/library" />
             <option value="$PROJECT_DIR$/feature/scan" />
             <option value="$PROJECT_DIR$/feature/search" />
+            <option value="$PROJECT_DIR$/model" />
             <option value="$PROJECT_DIR$/source" />
             <option value="$PROJECT_DIR$/utils" />
           </set>