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/model_forms.py

@@ -11,6 +11,7 @@ from extras.models import ConfigTemplate
 from ipam.choices import VLANQinQRoleChoices
 from ipam.models import ASN, IPAddress, VLAN, VLANGroup, VLANTranslationPolicy, VRF
 from netbox.forms import NetBoxModelForm
+from netbox.forms.mixins import ChangeLoggingMixin
 from tenancy.forms import TenancyForm
 from users.models import User
 from utilities.forms import add_blank_choice, get_field_value
@@ -973,7 +974,7 @@ class VCMemberSelectForm(forms.Form):
 # Device component templates
 #
 
-class ComponentTemplateForm(forms.ModelForm):
+class ComponentTemplateForm(ChangeLoggingMixin, forms.ModelForm):
     device_type = DynamicModelChoiceField(
         label=_('Device type'),
         queryset=DeviceType.objects.all(),