Add admin invoice reminders limit

packages/Webkul/Admin/src/Resources/lang/en/app.php

@@ -1491,6 +1491,8 @@ return [
             'invoice-slip-design'                   => 'Invoice Slip Design',
             'logo'                                  => 'Logo',
             'default'                               => 'Default',
+            'invoice-reminders'                     => 'Invoice Reminders',
+            'maximum-limit-of-reminders'               => 'Maximum limit of reminders',
             'sandbox'                               => 'Sandbox',
             'all-channels'                          => 'All Channels',
             'all-locales'                           => 'All Locales',

packages/Webkul/Sales/src/Config/system.php

@@ -133,5 +133,18 @@ return [
                 'channel_based' => true,
             ],
         ]
+    ], [
+        'key'    => 'sales.invoice_setttings.invoice_reminders',
+        'name'   => 'admin::app.admin.system.invoice-reminders',
+        'sort'   => 2,
+        'fields' => [
+            [
+                'name'          => 'reminders_limit',
+                'title'         => 'admin::app.admin.system.maximum-limit-of-reminders',
+                'type'          => 'text',
+                'validation'    => 'numeric',
+                'channel_based' => true,
+            ],
+        ]
     ],
 ];