Add Composer autoloading functions and PHPStan for testing

vendor/nikic/php-parser/lib/PhpParser/Node/Stmt/HaltCompiler.php

@@ -0,0 +1,30 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser\Node\Stmt;
+
+use PhpParser\Node\Stmt;
+
+class HaltCompiler extends Stmt
+{
+    /** @var string Remaining text after halt compiler statement. */
+    public $remaining;
+
+    /**
+     * Constructs a __halt_compiler node.
+     *
+     * @param string $remaining  Remaining text after halt compiler statement.
+     * @param array  $attributes Additional attributes
+     */
+    public function __construct(string $remaining, array $attributes = []) {
+        parent::__construct($attributes);
+        $this->remaining = $remaining;
+    }
+
+    public function getSubNodeNames() : array {
+        return ['remaining'];
+    }
+    
+    public function getType() : string {
+        return 'Stmt_HaltCompiler';
+    }
+}