Added a build.php to the bench directory

Author: Toflar

bin/build.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+use Toflar\FastSet\FastSet;
+use Toflar\FastSet\SetBuilder;
+
+require_once 'vendor/autoload.php';
+
+SetBuilder::buildSet(__DIR__.'/../tests/Fixtures/list.txt', __DIR__.'/../var/terms_encoded.txt');
+
+$fastSet = new FastSet(__DIR__.'/../var');
+$fastSet->build(__DIR__.'/../var/terms_encoded.txt');