Added a basic backend with stub functions to work against.

src/main/java/linux/general/hackyquizbot/QuizBackend.java

@@ -0,0 +1,58 @@
+package linux.general.hackyquizbot;
+
+public class QuizBackend {
+
+	public static String[] getCategories() {
+		return null;
+	}
+
+	public static Question getRandomQuestionForCategory(String category) {
+		return null;
+	}
+
+	public static int getScoreForUser(String discordUserID) {
+		return 0;
+	}
+
+	public static class Question {
+		public Question(String question, String[] answers) {
+
+		}
+
+		/**
+		 * @return the full question text including multiple choice options
+		 */
+		public String getQuestionTextWithOptions() {
+			return null;
+		}
+
+		/**
+		 * @return a character array containing all the valid answers
+		 */
+		public char[] getValidResponses() {
+			return null;
+		}
+
+		/**
+		 * This is used to send the user’s reply back to the backend. Can be called
+		 * multiple times to add answers for questions with multiple possible answers.
+		 * 
+		 * @param discordUserID
+		 * @param answer
+		 */
+		public void addAnswer(String discordUserID, char answer) {
+
+		}
+
+		/**
+		 * Used to balance easy and difficult questions. Difficult questions will have a
+		 * higher value so if someone gets a bunch of them they will get less questions
+		 * overall.
+		 * 
+		 * @return
+		 */
+		public int getQuestionScoreValue() {
+			return 0;
+		}
+	}
+}