added folder student and create new Ep Login

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

@@ -1 +1,10 @@
-export class CreateUserDto {}
+import { IsString } from "class-validator";
+
+export class CreateUserDto {
+
+    @IsString()
+    username:string
+
+    @IsString()
+    password:string
+}