Closes #19713: Enable recording user messages in the change log (#19908)

* Add message field to ObjectChange model

* Set max length on changelog message

* Enable changelog messages for single object operations

* Fix tests

* Add changelog message support for bulk edit & bulk delete

* Cosmetic improvements to form fields

* Fix bulk operation templates

* Add message support for bulk import/update

* Add REST API support for changelog messages (WIP)

* Fix changelog_message assignment

* Enable changelog message support for bulk deletions

* Add documentation

* Fix changelog message support for VirtualChassis

* Add ChangeLoggingMixin to necesssary model forms

* Introduce get_random_string() utility function for tests

* Incorporate changelog messages for object view tests

* Incorporate changelog messages for object bulk view tests

* Add missing mixins for changelog message support

* Tweak test to generate expected number of change records

* Finish adding tests for changelog message functionality

* Misc cleanup

* Fixes #19956: Prevent duplicate deletion records from cascading deletions

* Tweak bulk deletion test to work around cascading deletions issue

* Correct API URL

netbox/dcim/forms/object_create.py

@@ -426,6 +426,11 @@ class VirtualChassisCreateForm(NetBoxModelForm):
         help_text=_('Position of the first member device. Increases by one for each additional member.')
     )
 
+    fieldsets = (
+        FieldSet('name', 'domain', 'description', 'tags', name=_('Virtual Chassis')),
+        FieldSet('region', 'site_group', 'site', 'rack', 'members', 'initial_position', name=_('Member Devices')),
+    )
+
     class Meta:
         model = VirtualChassis
         fields = [