Implement trivia welcome screen with category picker

src/main/java/wtf/beatrice/hidekobot/objects/fun/TriviaQuestion.java

@@ -0,0 +1,8 @@
+package wtf.beatrice.hidekobot.objects.fun;
+
+import java.util.List;
+
+public record TriviaQuestion(String question, String correctAnswer,
+                             List<String> wrongAnswers) {
+
+}