feat: BAC-30 Implement Jackson Mapping via DTOs

knockoutwhistweb/app/dto/subDTO/HandDTO.scala

@@ -0,0 +1,15 @@
+package dto.subDTO
+
+import de.knockoutwhist.cards.Hand
+
+case class HandDTO(card: List[CardDTO])
+
+object HandDTO {
+  
+  def apply(hand: Hand): HandDTO = {
+    HandDTO(
+      card = hand.cards.zipWithIndex.map { case (card, idx) => CardDTO(card, idx) }
+    )
+  }
+  
+}