Closes #12194: Add pre-defined custom field choices (#13219)

* Initial work on custom field choice sets

* Rename choices to extra_choices (prep for #12194)

* Remove CustomField.choices

* Add & update tests

* Clean up table columns

* Add order_alphanetically boolean for choice sets

* Introduce ArrayColumn for choice lists

* Show dependent custom fields on choice set view

* Update custom fields documentation

* Introduce ArrayWidget for more convenient editing of choices

* Incorporate PR feedback

* Misc cleanup

* Initial work on predefined choices for custom fields

* Misc cleanup

* Add IATA airport codes

* #13241: Add support for custom field choice labels

* Restore ArrayColumn

* Misc cleanup

* Change extra_choices back to a nested ArrayField to preserve choice ordering

* Hack to bypass GraphQL API test utility absent support for nested ArrayFields

netbox/extras/forms/bulk_import.py

@@ -4,7 +4,7 @@ from django.contrib.postgres.forms import SimpleArrayField
 from django.utils.safestring import mark_safe
 from django.utils.translation import gettext as _
 
-from extras.choices import CustomFieldVisibilityChoices, CustomFieldTypeChoices, JournalEntryKindChoices
+from extras.choices import *
 from extras.models import *
 from extras.utils import FeatureQuery
 from netbox.forms import NetBoxModelImportForm
@@ -63,6 +63,11 @@ class CustomFieldImportForm(CSVModelForm):
 
 
 class CustomFieldChoiceSetImportForm(CSVModelForm):
+    base_choices = CSVChoiceField(
+        choices=CustomFieldChoiceSetBaseChoices,
+        required=False,
+        help_text=_('The base set of predefined choices to use (if any)')
+    )
     extra_choices = SimpleArrayField(
         base_field=forms.CharField(),
         required=False,