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/backend/migration/1681870960239-RoleTLSetting.js

@@ -1,10 +1,15 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 export class RoleTLSetting1681870960239 {
 	name = 'RoleTLSetting1681870960239'
 
 	async up(queryRunner) {
 		await queryRunner.query(`ALTER TABLE "role" ADD "isExplorable" boolean NOT NULL DEFAULT false`);
 	}
-	
+
 	async down(queryRunner) {
 		await queryRunner.query(`ALTER TABLE "role" DROP COLUMN "isExplorable"`);
 	}