feat: Avatar decoration (#12096)

* wip

* Update ja-JP.yml

* Update profile.vue

* .js

* Update home.test.ts

packages/backend/src/core/RoleService.ts

@@ -227,6 +227,12 @@ export class RoleService implements OnApplicationShutdown {
 		}
 	}
 
+	@bindThis
+	public async getRoles() {
+		const roles = await this.rolesCache.fetch(() => this.rolesRepository.findBy({}));
+		return roles;
+	}
+
 	@bindThis
 	public async getUserAssigns(userId: MiUser['id']) {
 		const now = Date.now();