feat(frontend): 今日誕生日のフォロー中のユーザーを一覧表示できるウィジェットを追加 (#12450)

* (add) 今日誕生日のフォロイー一覧表示

* Update Changelog

* Update Changelog

* 実装漏れ

* create index

* (fix) index

packages/backend/migration/1700902349231-add-bday-index.js

@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class AddBdayIndex1700902349231 {
+    name = 'AddBdayIndex1700902349231'
+
+    async up(queryRunner) {
+      await queryRunner.query(`CREATE INDEX "IDX_de22cd2b445eee31ae51cdbe99" ON "user_profile" (SUBSTR("birthday", 6, 5))`);
+    }
+
+    async down(queryRunner) {
+			await queryRunner.query(`DROP INDEX "public"."IDX_de22cd2b445eee31ae51cdbe99"`);
+    }
+}