refactor(core): move FlashTwigExtension from core to Twig Plugin 1.0.4

Author: Awilum

composer.json

@@ -16,8 +16,7 @@
       "issues": "https://github.com/flextype/issues"
     },
     "require": {
-        "php": ">=7.2.0",
-        "slim/flash": "~0.4.0"
+        "php": ">=7.2.0"
     },
     "config": {
         "apcu-autoloader": true,

dependencies.php

@@ -11,7 +11,6 @@
 
 namespace Flextype;
 
-use Slim\Flash\Messages;
 use Flextype\Component\I18n\I18n;
 use function Flextype\Component\I18n\__;
 
@@ -27,9 +26,6 @@
 // Add Global Vars Admin Twig Extension
 $flextype->twig->addExtension(new GlobalVarsAdminTwigExtension($flextype));
 
-// Add Flash Twig Extension
-$flextype->twig->addExtension(new FlashTwigExtension($flextype));
-
 /**
  * Add Assets
  */
@@ -45,13 +41,6 @@
                        array_merge($_admin_js,
                        ['project/plugins/admin/assets/dist/js/admin-vendor-build.min.js']));
 
-/**
- * Add flash service to Flextype container
- */
-$flextype['flash'] = static function () {
-    return new Messages();
-};
-
 $flextype['DashboardController'] = static function ($container) {
     return new DashboardController($container);
 };