feat: BAC-30 Implement Jackson Mapping via DTOs (#102)

Reviewed-on: #102
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/dto/subDTO/TrickDTO.scala

@@ -0,0 +1,17 @@
+package dto.subDTO
+
+import de.knockoutwhist.rounds.Trick
+
+case class TrickDTO(cards: Map[PlayerDTO, CardDTO], firstCard: Option[CardDTO], winner: Option[PlayerDTO])
+
+object TrickDTO {
+
+  def apply(trick: Trick): TrickDTO = {
+    TrickDTO(
+      cards = trick.cards.map { case (card, player) => PlayerDTO(player) -> CardDTO(card) },
+      firstCard = trick.firstCard.map(card => CardDTO(card)),
+      winner = trick.winner.map(player => PlayerDTO(player))
+    )
+  }
+
+}