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

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

client/pages/settings/workspace.vue

@@ -8,8 +8,9 @@
         <small class="text-gray-500">You're currently editing the settings for the workspace "{{ workspace.name }}".
           You can switch to another workspace in top left corner of the page.</small>
       </div>
-      <div class="w-full flex flex-wrap justify-between gap-2">
+      <div class="w-full flex flex-wrap gap-2">
         <WorkSpaceCustomDomains v-if="useFeatureFlag('custom_domains') && !loading" />
+        <WorkSpaceEmailSettings v-if="!loading" />
         <UButton
           label="New Workspace"
           icon="i-heroicons-plus"