Add Instagram-style social features and Postman collections

src/modules/chat/schemas/message.schema.ts

@@ -22,11 +22,21 @@ export class Message {
   @Prop({ required: false, default: '' })
   mediaUrl!: string;
 
+  @Prop({ type: Types.ObjectId, ref: 'Message', default: null, index: true })
+  replyToMessageId?: Types.ObjectId | null;
+
+  @Prop({ type: Map, of: String, default: {} })
+  reactionsByUser!: Map<string, string>;
+
   @Prop({ type: [Types.ObjectId], ref: User.name, default: [] })
   seenBy!: Types.ObjectId[];
 
+  @Prop({ type: [Types.ObjectId], ref: User.name, default: [], index: true })
+  deletedForUserIds!: Types.ObjectId[];
+
   @Prop({ default: false, index: true })
   isUnsent!: boolean;
+
 }
 
 export const MessageSchema = SchemaFactory.createForClass(Message);