add index to tables

src/modules/chat/entities/ticket.entity.ts

@@ -3,6 +3,7 @@ import {
   ManyToOne,
   Property,
   OptionalProps,
+  Index,
 } from '@mikro-orm/core';
 import { User } from "../../user/entities/user.entity";
 import { Admin } from 'src/modules/admin/entities/admin.entity';
@@ -10,10 +11,10 @@ import { AttachmentType } from '../interfaces/chat';
 import { BaseEntity } from 'src/common/entities/base.entity';
 
 @Entity()
+@Index({ properties: ['user'] })
 export class Chat extends BaseEntity {
   [OptionalProps]?: 'createdAt' | 'deletedAt'
 
-
   @Property({ type: 'text' })
   content: string;