refactor: 整理组件目录结构

- TransactionDetail, CategoryBillPopup 移入 Transaction/
- BudgetTypeTabs 移入 Budget/
- GlassBottomNav, ModernEmpty 移入 Global/
- Icon, IconSelector, ClassifySelector 等 8 个通用组件移入 Common/
- 更新所有相关引用路径

Web/src/views/ClassificationEdit.vue

@@ -230,9 +230,9 @@
 import { ref, computed } from 'vue'
 import { useRouter } from 'vue-router'
 import { showSuccessToast, showToast, showLoadingToast, closeToast } from 'vant'
-import Icon from '@/components/Icon.vue'
-import IconSelector from '@/components/IconSelector.vue'
-import PopupContainerV2 from '@/components/PopupContainerV2.vue'
+import Icon from '@/components/Common/Icon.vue'
+import IconSelector from '@/components/Common/IconSelector.vue'
+import PopupContainerV2 from '@/components/Common/PopupContainerV2.vue'
 import {
   getCategoryList,
   createCategory,