feat: ノートの閲覧にログイン必須にする設定 (#14799)

* wip

* wip

* wip

* Update packages/frontend/src/pages/note.vue

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>

* wip

* Update WebhookTestService.ts

* Update privacy.vue

* wip

* rename

* Update locales/ja-JP.yml

Co-authored-by: Sayamame-beans <61457993+Sayamame-beans@users.noreply.github.com>

* 🎨

* wip

---------

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
Co-authored-by: Sayamame-beans <61457993+Sayamame-beans@users.noreply.github.com>

packages/backend/migration/1729333924409-signinRequiredForShowContents.js

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class SigninRequiredForShowContents1729333924409 {
+    name = 'SigninRequiredForShowContents1729333924409'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "user" ADD "requireSigninToViewContents" boolean NOT NULL DEFAULT false`);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "user" DROP COLUMN "requireSigninToViewContents"`);
+    }
+}