add file-structure

src/main/kotlin/ui/features/admin/AdminUI.kt

@@ -0,0 +1,4 @@
+package ui.features.admin
+
+class AdminUI {
+}

src/main/kotlin/ui/features/common/CommonUI.kt

@@ -0,0 +1,4 @@
+package ui.features.common
+
+class CommonUI {
+}

src/main/kotlin/ui/features/user/UserUI.java

@@ -0,0 +1,4 @@
+package ui.features.user;
+
+public class UserUI {
+}