Add debug messages for fabric checks

src/de/steamwar/bungeecore/listeners/mods/Fabric.java

@@ -41,6 +41,7 @@ import java.nio.charset.UnsupportedCharsetException;
 import java.util.*;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
+import java.util.stream.Collectors;
 
 public class Fabric extends BasicListener {
 
@@ -126,7 +127,7 @@ public class Fabric extends BasicListener {
         boolean isSorted = isSortedAlphabetically(mods);
 
         if(!isSorted) {
-            banPlayer(user, player, "Mods are not sorted alphabetically");
+            banPlayer(user, player, "Mods are not sorted alphabetically: " + mods.stream().map(Mod::getModName).collect(Collectors.joining(", ")));
             return;
         }