composer: require php tokenizer extension

composer.json

@@ -25,6 +25,7 @@
 	},
 	"require": {
 		"php": "^8.0",
+		"ext-tokenizer": "*",
 		"nette/finder": "^2.5",
 		"nette/php-generator": "^3.5",
 		"symfony/console": "^5.0",