added mail service

components/LocaleSwitcher.tsx

@@ -0,0 +1,24 @@
+'use client'
+import { useChangeLocale, useCurrentLocale } from '@/locales/client'
+import { LC, type loc } from '@/config/locales'
+import { ChangeEvent } from 'react'
+import styles from '@/styles/LocaleSwitcher.module.scss'
+
+export default function LocaleSwitcher () {
+  const changeLocale = useChangeLocale()
+  const locale = useCurrentLocale()
+  const selectHandler = (e: ChangeEvent<HTMLSelectElement>) => changeLocale(
+    e.target.value as loc)
+
+  return (
+    //@ts-ignore
+    <select onChange={selectHandler} defaultValue={locale}
+            className={styles['yo-locale-switcher']}>
+      {LC.map(item => (
+        <option key={item.iso} value={item.code}>
+          {item.iso.toUpperCase()}
+        </option>
+      ))}
+    </select>
+  )
+}