add dto validation and swagger schemas

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

@@ -1,7 +1,21 @@
+import { ApiPropertyOptional } from '@nestjs/swagger';
+import { IsBoolean, IsEnum, IsOptional, IsString, MaxLength } from 'class-validator';
 import { UserRole } from '../../../entities/user.entity';
 
 export class UpdateUserDto {
+  @ApiPropertyOptional({ example: 'Mahdi', nullable: true })
+  @IsOptional()
+  @IsString()
+  @MaxLength(150)
   fullName?: string | null;
+
+  @ApiPropertyOptional({ enum: UserRole, example: UserRole.BUSINESS_OWNER })
+  @IsOptional()
+  @IsEnum(UserRole)
   role?: UserRole;
+
+  @ApiPropertyOptional({ example: true })
+  @IsOptional()
+  @IsBoolean()
   isActive?: boolean;
 }