WIP doc for dto creation

Author: tacxou

docs/dto/NEW_DTO.md

@@ -0,0 +1,19 @@
+# Create new DTO
+## For crud operations
+```ts
+import { ApiProperty, PartialType } from '@nestjs/swagger'
+import { AbstractCustomFieldsDto } from '~/_common/abstracts/dto/abstract.custom-fields.dto'
+import { IsMongoId } from 'class-validator'
+
+export class [NAME]CreateDto extends AbstractCustomFieldsDto {
+}
+
+export class [NAME]Dto extends [NAME]CreateDto {
+  @IsMongoId()
+  @ApiProperty()
+  public _id: string
+}
+
+export class [NAME]UpdateDto extends PartialType([NAME]CreateDto) {
+}
+```