HookHandler will not be supported for eca 3.1.0

Problem/Motivation

Move from HookHandler to use classes.

------ -------------------------------------------------------------- 
  Line   src/HookHandler.php                                           
 ------ -------------------------------------------------------------- 
  14     Class Drupal\mautic_eca\HookHandler extends deprecated class  
         Drupal\eca\Event\BaseHookHandler:                             
         in eca:3.0.0 and is removed from eca:3.1.0. Procedural hooks  
         should be converted into classes.                             
         🪪  class.extendsDeprecatedClass                              
  23     Access to property $triggerEvent of deprecated class          
         Drupal\eca\Event\BaseHookHandler:                             
         in eca:3.0.0 and is removed from eca:3.1.0. Procedural hooks  
         should be converted into classes.                             
         🪪  property.deprecatedClass                                  
 ------ --------------------------------------------------------------

See: https://www.drupal.org/node/3442349 →