Add bPermissions migration

bungee/src/main/java/me/lucko/luckperms/LPBungeePlugin.java

@@ -185,6 +185,11 @@ public class LPBungeePlugin extends Plugin implements LuckPermsPlugin {
         return null;
     }
 
+    @Override
+    public UUID getUUID(String playerName) {
+        return null; // Not needed on Bungee
+    }
+
     @Override
     public boolean isPluginLoaded(String name) {
         return getProxy().getPluginManager().getPlugins().stream()