feat: Adds the ability to have custom view for conversations (#3666)

* feat: Adds the ability to save custom filters and display folders on the sidebar

* Minor fixes

* Review fixes

* Review fixes

* i18n fixes

* Shows conversations when the user click on the folder sidebar item

* Spacing fixes

* Review fixes

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/dashboard/components/layout/config/sidebarItems/conversations.js

@@ -14,6 +14,8 @@ const conversations = accountId => ({
     'conversations_through_team',
     'conversation_mentions',
     'conversation_through_mentions',
+    'custom_view_conversations',
+    'conversations_through_custom_view',
   ],
   menuItems: [
     {