Upgrade code to php 8.1 (#6748)

* revert
Fix code indentation
Fix code

Upgrade code to php 8.1

* fix remarques

* code review

* code review

* code review

* Apply suggestions from code review

* code review

* Fixes

* Many remainging updates of array syntax

* Lost case 'reading-list'

* Uneeded PHPDoc

---------

Co-authored-by: Luc Sanchez <l.sanchez-prestataire@alptis.fr>
Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

lib/Minz/ModelArray.php

@@ -41,7 +41,7 @@ class Minz_ModelArray {
 			if ($data === false) {
 				throw new Minz_PermissionDeniedException($this->filename);
 			} elseif (!is_array($data)) {
-				$data = array();
+				$data = [];
 			}
 			return $data;
 		}