Fix extensions in actualize_script (#5243)

* Fix extension freshrss_user_maintenance in actualize_script
Follow-up of https://github.com/FreshRSS/FreshRSS/pull/3440

The hook was called before registering all the extensions for the current user

* PHPStan Level 6 for extensions
And remove 5-year old legacy format of enabled extensions < FreshRSS 1.11.1

* Fix multiple bugs in extensions

* Minor typing

* Don't change signature of methods supposed to be overridden

* PHPStan Level 9 and compatibility Intelliphense

* Set as final the methods not supposed to be overriden

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/Minz/ActionController.php b/lib/Minz/ActionController.php
index 08ef2a051..c29ae8ad8 100644
--- a/lib/Minz/ActionController.php
+++ b/lib/Minz/ActionController.php
@@ -90,7 +90,7 @@ class Minz_ActionController {
 	 * firstAction est la première méthode exécutée par le Dispatcher
 	 * lastAction est la dernière
 	 */
-	public function init () { }
-	public function firstAction () { }
-	public function lastAction () { }
+	public function init(): void { }
+	public function firstAction(): void { }
+	public function lastAction(): void { }
 }