Add Symfony Deprecation Contracts package

- Created CHANGELOG.md to maintain version history.
- Added README.md with usage instructions for the trigger_deprecation() function.
- Initialized composer.json for the Symfony Deprecation Contracts library, specifying dependencies and autoloading.

modules/pshowsso/views/templates/admin/configuration.html.twig

@@ -9,7 +9,7 @@
  * @copyright Since 2014 PrestaShow.pl
  * @license   https://prestashow.pl/license
  * #}
-{% extends '@Modules/pshowsso/vendor/prestashow/presta-base-v1/Resources/views/admin/admin_controller.html.twig' %}
+{% extends '@Modules/pshowsso/deps/prestashow/presta-base-v1/Resources/views/admin/admin_controller.html.twig' %}
 
 {% block module_content %}
     {{ form_start(configurationForm) }}

modules/pshowsso/views/templates/admin/more.html.twig

@@ -9,7 +9,7 @@
  * @copyright Since 2014 PrestaShow.pl
  * @license   https://prestashow.pl/license
  *#}
-{% extends '@Modules/pshowsso/vendor/prestashow/presta-base-v1/Resources/views/admin/admin_controller.html.twig' %}
+{% extends '@Modules/pshowsso/deps/prestashow/presta-base-v1/Resources/views/admin/admin_controller.html.twig' %}
 
 {% block module_content %}
     <div class="row justify-content-center">