Custom SMTP Settings (#561)

* Custom SMTP Settings

* Fix lint

* Custom SMTP add in Pricing plan

* Allow reset email settings

* improve custom SMTP using seprate abstract class

* test case for custom SMTP

* fix test case

* UI improvement

* add CASHIER_KEY in phpunit for testcase

* Attempt to fix tests

* Run pint and attempt to fix cache tests

* Fix user management tests

* Fix code linters

* Merged main & fix linting

---------

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

api/app/Jobs/Billing/WorkspaceUsersUpdated.php

@@ -38,7 +38,7 @@ class WorkspaceUsersUpdated implements ShouldQueue
     public function handle(): void
     {
         // If self-hosted, no need to update billing
-        if (!pricing_enabled()) {
+        if (!pricing_enabled() || \App::environment('testing')) {
             return;
         }