Add: PlayerState class

Refs #52

src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/game/PlayerState.java

@@ -0,0 +1,10 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.game;
+
+/**
+ * Enumeration representing the possible states of a player in the poker game.
+ */
+public enum PlayerState {
+    ACTIVE,
+    FOLDED,
+    DEALER
+}