Add SSO and Domain Verification widget scopes (#396)

Allowing these widgets to be used via the `WorkOS::Widgets.get_token` API.

Author: adam-h

lib/workos/types/widget_scope.rb

@@ -6,8 +6,10 @@ module Types
     # scopes while generating a widget token.
     module WidgetScope
       USERS_TABLE_MANAGE = 'widgets:users-table:manage'
+      SSO_MANAGE = 'widgets:sso:manage'
+      DOMAIN_VERIFICATION_MANAGE = 'widgets:domain-verification:manage'
 
-      ALL = [USERS_TABLE_MANAGE].freeze
+      ALL = [USERS_TABLE_MANAGE, SSO_MANAGE, DOMAIN_VERIFICATION_MANAGE].freeze
     end
   end
 end