feat: add question transition entity and validators

src/modules/questions/dtos/create-question-transition.dto.ts

@@ -0,0 +1,46 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsEnum, IsInt, IsOptional, Min } from 'class-validator';
+import { Type } from 'class-transformer';
+import { QuestionTransitionType } from '../enums/question-transition-type.enum';
+import type { TransitionConditionType } from '../types/transition-condition.type';
+
+export class CreateQuestionTransitionDTO {
+  @ApiProperty()
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  test!: number;
+
+  @ApiProperty({
+    required: false,
+    nullable: true,
+  })
+  @IsOptional()
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  fromQuestion?: number;
+
+  @ApiProperty({
+    required: false,
+    nullable: true,
+  })
+  @IsOptional()
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  toQuestion?: number;
+
+  @ApiProperty({
+    enum: QuestionTransitionType,
+  })
+  @IsEnum(QuestionTransitionType)
+  type!: QuestionTransitionType;
+
+  @ApiProperty({
+    required: false,
+    nullable: true,
+  })
+  @IsOptional()
+  conditionValue?: TransitionConditionType;
+}

src/modules/questions/dtos/update-question-transition.dto.ts

@@ -0,0 +1,6 @@
+import { PartialType } from '@nestjs/swagger';
+import { CreateQuestionTransitionDTO } from './create-question-transition.dto';
+
+export class UpdateQuestionTransitionDTO extends PartialType(
+  CreateQuestionTransitionDTO,
+) {}