Added modules for books & series.

backend/nestjs-seshat-api/src/books/dto/create-book.dto.ts

@@ -0,0 +1,35 @@
+import { Transform } from 'class-transformer';
+import { IsDate, IsNotEmpty, IsNumber, IsOptional, IsPositive, IsString, MaxLength } from 'class-validator';
+
+export class CreateBookDto {
+  @IsString()
+  @IsOptional()
+  providerSeriesId: string;
+
+  @IsString()
+  @IsNotEmpty()
+  providerBookId: string;
+
+  @IsString()
+  @IsNotEmpty()
+  @MaxLength(128)
+  title: string;
+
+  @IsString()
+  @MaxLength(512)
+  desc: string;
+
+  @IsNumber()
+  @IsOptional()
+  @IsPositive()
+  volume: number | null;
+
+  @IsString()
+  @IsNotEmpty()
+  provider: string;
+
+  @IsDate()
+  @IsNotEmpty()
+  @Transform(({ value }) => new Date(value))
+  publishedAt: Date
+}