List command should show player uid

src/main/java/emu/grasscutter/command/commands/ListCommand.java

@@ -19,8 +19,19 @@ public final class ListCommand implements CommandHandler {
 
         if (playersMap.size() != 0) {
             StringBuilder playerSet = new StringBuilder();
-            playersMap.values().forEach(player -> 
-                    playerSet.append(player.getNickname()).append(", "));
+            playersMap.values().forEach(player -> {
+                playerSet.append(player.getNickname());
+
+                if (sender != null) {
+                    playerSet.append("<color=green><UID:")
+                            .append(player.getUid())
+                            .append("></color>, ");
+                } else {
+                    playerSet.append("<UID:")
+                            .append(player.getUid())
+                            .append(">, ");
+                }
+            });
 
             String players = playerSet.toString();
             CommandHandler.sendMessage(sender, players.substring(0, players.length() - 2));