refactoring of filters

src/Query/BuilderConverter/BuilderConverter.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Lucent\Query\BuilderConverter;
+
+use Lucent\Query\Filter\Argument;
+
+class BuilderConverter
+{
+    public function for(Argument $argument): IBuilderConverter
+    {
+        return  new ($argument->operator->converter)($argument);
+    }
+}