feat: add LocaleSwitcher component

src/components/LocaleSwitcher.vue

@@ -0,0 +1,29 @@
+<script setup lang="ts">
+const localeFlags = {
+  en: "🇬🇧 English",
+  de: "🇩🇪 Deutsch",
+};
+</script>
+
+<template>
+  <div class="localeswitch">
+    <select v-model="$i18n.locale">
+      <option
+        v-for="locale in $i18n.availableLocales"
+        :key="`locale-${locale}`"
+        :value="locale"
+      >
+        {{ localeFlags[locale] }}
+      </option>
+    </select>
+  </div>
+</template>
+
+<style lang="scss">
+.localeswitch {
+  select {
+    display: block;
+    margin: auto;
+  }
+}
+</style>