feat: Add i18n support for Chinese language (#142)

* feat: Add i18n support for Chinese language

* fix: locale not working in Docker environment

components/Chat/ModelSelect.tsx

@@ -1,5 +1,6 @@
 import { OpenAIModel } from "@/types";
 import { FC } from "react";
+import { useTranslation } from "next-i18next";
 
 interface Props {
   model: OpenAIModel;
@@ -8,12 +9,13 @@ interface Props {
 }
 
 export const ModelSelect: FC<Props> = ({ model, models, onModelChange }) => {
+  const {t} = useTranslation('chat')
   return (
     <div className="flex flex-col">
-      <label className="text-left mb-2 dark:text-neutral-400 text-neutral-700">Model</label>
+      <label className="text-left mb-2 dark:text-neutral-400 text-neutral-700">{t('Model')}</label>
       <select
         className="w-full p-3 dark:text-white dark:bg-[#343541] border border-neutral-500 rounded-lg appearance-none focus:shadow-outline text-neutral-900 cursor-pointer"
-        placeholder="Select a model"
+        placeholder={t("Select a model") || ''}
         value={model.id}
         onChange={(e) => {
           onModelChange(models.find((model) => model.id === e.target.value) as OpenAIModel);