feat(admin): add items CSV import to data tools

Allow bulk importing items via CSV in the admin data tools
Support static image paths for items imported from CSV

system-wordings.ts

@@ -1029,6 +1029,9 @@ export const systemWordingMessages = {
         dataToolImportButton: 'Import',
         dataToolImportFile: 'Data bundle',
         dataToolImportMode: 'Import replaces the scopes included in the bundle.',
+        dataToolItemsCsvFile: 'Items CSV',
+        dataToolItemsCsvMode: 'CSV import adds Items only. Wipe Items first when replacing the list.',
+        dataToolItemsCsvImported: 'Items CSV imported.',
         dataToolWipe: 'Wipe data',
         dataToolWipeButton: 'Wipe',
         dataToolSelectScope: 'Select at least one data scope.',
@@ -1282,6 +1285,7 @@ export const systemWordingMessages = {
       dataToolScopeRequired: 'Select at least one data scope',
       dataToolScopeInvalid: 'Data scope is invalid',
       dataToolBundleInvalid: 'Data bundle is invalid',
+      dataToolItemsCsvInvalid: 'Items CSV is invalid',
       pokemonImagePathInvalid: 'Pokemon image path is invalid',
       imagePathInvalid: 'Image path is invalid',
       imageUploadRequired: 'Please select an image',
@@ -2370,6 +2374,9 @@ export const systemWordingMessages = {
         dataToolImportButton: '导入',
         dataToolImportFile: '数据包',
         dataToolImportMode: '导入会替换数据包内包含的范围。',
+        dataToolItemsCsvFile: '物品 CSV',
+        dataToolItemsCsvMode: 'CSV 导入只会新增物品。替换列表时请先清空物品。',
+        dataToolItemsCsvImported: '物品 CSV 已导入。',
         dataToolWipe: '清空数据',
         dataToolWipeButton: '清空',
         dataToolSelectScope: '请至少选择一个数据范围。',
@@ -2623,6 +2630,7 @@ export const systemWordingMessages = {
         dataToolScopeRequired: '请至少选择一个数据范围',
         dataToolScopeInvalid: '数据范围不合法',
         dataToolBundleInvalid: '数据包不合法',
+        dataToolItemsCsvInvalid: '物品 CSV 不合法',
         pokemonImagePathInvalid: 'Pokemon 图片路径不合法',
         imagePathInvalid: '图片路径不合法',
         imageUploadRequired: '请选择图片',