chore: set PHPStan to level 5 with baseline

.phive/phars.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="phpstan" version="1.11.1" installed="1.11.1" location="./tools/phpstan" copy="false"/>
+  <phar name="phpstan" version="1.11.8" installed="1.11.8" location="./tools/phpstan" copy="false"/>
   <phar name="phpunit" version="^10.5.20" installed="10.5.20" location="./tools/phpunit" copy="false"/>
   <phar name="phpcs" version="^3.10.1" installed="3.10.1" location="./tools/phpcs" copy="false"/>
   <phar name="phpcbf" version="^3.10.1" installed="3.10.1" location="./tools/phpcbf" copy="false"/>

phpstan-baseline.neon

+parameters:
+	ignoreErrors:
+		-
+			message: "#^Strict comparison using \\=\\=\\= between mixed and '' will always evaluate to false\\.$#"
+			count: 1
+			path: src/QUI/Menu/Bricks/Submenu.php
+
+		-
+			message: "#^Call to an undefined method QUI\\\\Interfaces\\\\Projects\\\\Site\\:\\:getCachePath\\(\\)\\.$#"
+			count: 1
+			path: src/QUI/Menu/DropDownMenu.php
+
+		-
+			message: "#^Parameter \\#1 \\$menuId of static method QUI\\\\Menu\\\\Independent\\\\Handler\\:\\:getMenu\\(\\) expects int, string\\|false given\\.$#"
+			count: 1
+			path: src/QUI/Menu/Independent/Factory.php
+
+		-
+			message: "#^Call to an undefined method QUI\\\\Interfaces\\\\Projects\\\\Site\\:\\:getCachePath\\(\\)\\.$#"
+			count: 1
+			path: src/QUI/Menu/MegaMenu.php
+
+		-
+			message: "#^Variable \\$Site in PHPDoc tag @var does not match any variable in the foreach loop\\: \\$data, \\$dataSet$#"
+			count: 1
+			path: src/QUI/Menu/NavTabs.php

phpstan.dist.neon

@@ -2,7 +2,7 @@ includes:
     - phpstan-baseline.neon
 
 parameters:
-    level: 1
+    level: 5
     paths:
         - src
         - ajax