feat(user-sessions): add custom exceptions for game logic and enhance user session interaction

knockoutwhistweb/app/exceptions/CantPlayCardException.java

@@ -0,0 +1,7 @@
+package exceptions;
+
+public class CantPlayCardException extends GameException {
+    public CantPlayCardException(String message) {
+        super(message);
+    }
+}