fix npe

src/main/java/cc/fascinated/bat/features/scoresaber/profile/guild/UserScoreFeedProfile.java

@@ -29,6 +29,18 @@ public class UserScoreFeedProfile extends Profile {
         super("scoresaber-user-score-feed");
     }
 
+    /**
+     * Gets the tracked users
+     *
+     * @return the tracked users
+     */
+    public List<String> getTrackedUsers() {
+        if (this.trackedUsers == null) {
+            this.trackedUsers = new ArrayList<>();
+        }
+        return trackedUsers;
+    }
+
     /**
      * Checks if a user is being tracked
      *