chore: imported existing user module files from old repo

packages/hoppscotch-backend/src/user/user.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { UserResolver } from './user.resolver';
+import { PubSubModule } from 'src/pubsub/pubsub.module';
+
+@Module({
+  imports: [PubSubModule],
+  providers: [UserResolver],
+  exports: [],
+})
+export class UserModule {}