feat(i18n): 新增 Discord 通知設定的繁中、英文、日文多語系翻譯

lang/en.json

@@ -1897,6 +1897,7 @@
     "menu.basic": "Basic Settings",
     "menu.basic.machines": "Machine Settings",
     "menu.basic.payment-configs": "Customer Payment Config",
+    "menu.basic.discord-notifications": "Discord Notifications",
     "menu.data-config": "Data Configuration",
     "menu.data-config.admin-products": "Product Status",
     "menu.data-config.advertisements": "Advertisement Management",

lang/ja.json

@@ -1897,6 +1897,7 @@
     "menu.basic": "基本設定",
     "menu.basic.machines": "機器設定",
     "menu.basic.payment-configs": "顧客決済設定",
+    "menu.basic.discord-notifications": "Discord通知設定",
     "menu.data-config": "データ設定",
     "menu.data-config.admin-products": "商品ステータス",
     "menu.data-config.advertisements": "広告管理",

lang/zh_TW.json

@@ -1932,6 +1932,7 @@
     "menu.basic": "基本設定",
     "menu.basic.machines": "機台設定",
     "menu.basic.payment-configs": "客戶金流設定",
+    "menu.basic.discord-notifications": "Discord通知設定",
     "menu.data-config": "資料設定",
     "menu.data-config.admin-products": "商品狀態",
     "menu.data-config.advertisements": "廣告管理",