[Added] Discord Webhook Notification (#81) (#83)

* [Feature] Added Discord Webhook feature to forms

* Remove commented out svg

---------

Co-authored-by: Julien Nahum <julien@nahum.net>

app/Service/Forms/FormCleaner.php

@@ -39,6 +39,7 @@ class FormCleaner
         'use_captcha' => false,
         'password' => null,
         'slack_webhook_url' => null,
+        'discord_webhook_url' => null,
     ];
 
     private array $fieldDefaults = [
@@ -70,6 +71,7 @@ class FormCleaner
         'database_fields_update' => 'Form submission will only create new records (no updates).',
         'theme' => 'Default theme was applied.',
         'slack_webhook_url' => "Slack webhook disabled.",
+        'discord_webhook_url' => "Discord webhook disabled.",
 
         // For fields
         'hide_field_name' => 'Hide field name removed.',