support for PHP 8.4

Author: dg

preset-fixer/php84.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+$config = require __DIR__ . '/php83.php';
+
+$rules = [
+	'@PHP84Migration' => true,
+];
+
+$config->setRules($rules + $config->getRules());
+return $config;

preset-sniffer/php84.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<ruleset name="PHP 8.4" namespace="Nette">
+	<rule ref="./php83.xml"/>
+
+	<config name="php_version" value="80400"/>
+</ruleset>