made all abstract middleware methods abstract

src/Utils/Middleware/LuAbstractMiddleware.php

 
 abstract class LuAbstractMiddleware
 {
-    public function onBefore(LuRouteDbo $route, $parameters, ...$params)
-    {
-        
-    }
+    public abstract function onBefore(LuRouteDbo $route, $parameters, ...$params);
     
-    public function onAfter(LuRouteDbo $route, $parameters, $result, ...$params)
-    {
-        
-    }
+    public abstract function onAfter(LuRouteDbo $route, $parameters, $result, ...$params);
 }