feat: transfer money to child

src/junior/dtos/response/transfer-to-junior.response.dto.ts

@@ -0,0 +1,10 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class TransferToJuniorResponseDto {
+  @ApiProperty({ example: 300.42 })
+  newAmount!: number;
+
+  constructor(newAmount: number) {
+    this.newAmount = newAmount;
+  }
+}