chore: 著作権とライセンスについての情報を各ファイルに追加する (#11348)

* chore: Add the SPDX information to each file

Add copyright and licensing information as defined in version 3.0 of
the REUSE Specification.

* tweak format

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

packages/frontend/src/scripts/intl-const.ts

@@ -1,12 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { lang } from '@/config';
 
 export const versatileLang = (lang ?? 'ja-JP').replace('ja-KS', 'ja-JP');
 export const dateTimeFormat = new Intl.DateTimeFormat(versatileLang, {
-    year: 'numeric',
-    month: 'numeric',
-    day: 'numeric',
-    hour: 'numeric',
-    minute: 'numeric',
-    second: 'numeric',
+	year: 'numeric',
+	month: 'numeric',
+	day: 'numeric',
+	hour: 'numeric',
+	minute: 'numeric',
+	second: 'numeric',
 });
 export const numberFormat = new Intl.NumberFormat(versatileLang);