feat: お知らせの確認待機時間・優先順位機能

b7fd6bf33a835fd73c2a86eb007074d3680f6efd によるリワーク

This reverts commit eeef3965b7
This reverts commit 04fefb2056
This reverts commit 576251200f

packages/backend/migration/1690463372775-announcement-display-order.js

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class AnnouncementDisplayOrder1690463372775 {
+    name = 'AnnouncementDisplayOrder1690463372775'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "announcement" ADD "displayOrder" integer NOT NULL DEFAULT '0'`);
+        await queryRunner.query(`CREATE INDEX "IDX_b64d293ca4bef21e91963054b0" ON "announcement" ("displayOrder") `);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`DROP INDEX "public"."IDX_b64d293ca4bef21e91963054b0"`);
+        await queryRunner.query(`ALTER TABLE "announcement" DROP COLUMN "displayOrder"`);
+    }
+}