feat(front): add I18nSwitchDrawer component for locale switching functionality

front/components/Drawer/I18nSwitchDrawer.vue

@@ -0,0 +1,41 @@
+<script setup lang="ts">
+import { cx } from "class-variance-authority";
+
+const { availableLocales, setLocale, locale: currentLocale, t } = useI18n();
+const route = useRoute();
+
+const localeMap = {
+  "zh-CN": "简体中文",
+  en: "English",
+  // 'ja': '日本語',
+  // 'ko': '한국어',
+  // 'fr': 'Français',
+  // 'de': 'Deutsch',
+};
+
+const switchLocale = async (locale: string) => {
+  await setLocale(locale as keyof typeof localeMap);
+  navigateTo(route.path, {
+    external: true,
+  });
+};
+</script>
+
+<template>
+  <div class="flex flex-col gap-1 py-2">
+    <div class="text-xl font-bold mb-3">{{ t("i18n.switchLocale") }}</div>
+    <div
+      v-for="locale in availableLocales"
+      :key="locale"
+      :class="
+        cx(
+          'rounded-md hover:bg-black/10 p-2 cursor-pointer',
+          currentLocale === locale && 'bg-black/10 font-bold',
+        )
+      "
+      @click="() => switchLocale(locale)"
+    >
+      {{ localeMap?.[locale as keyof typeof localeMap] }}
+    </div>
+  </div>
+</template>