added connection to the dataBase

src/user/dto/create-user.dto.ts

@@ -0,0 +1 @@
+export class CreateUserDto {}

src/user/dto/update-user.dto.ts

@@ -0,0 +1,4 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateUserDto } from './create-user.dto';
+
+export class UpdateUserDto extends PartialType(CreateUserDto) {}