feat: add support tickets backend and dashboard

src/modules/support/dto/create-support-message.dto.ts

@@ -0,0 +1,10 @@
+import { ApiPropertyOptional } from '@nestjs/swagger';
+import { IsOptional, IsString, Length } from 'class-validator';
+
+export class CreateSupportMessageDto {
+  @ApiPropertyOptional({ maxLength: 5000 })
+  @IsOptional()
+  @IsString()
+  @Length(0, 5000)
+  message?: string;
+}