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/tests/test_api.py

@@ -139,15 +139,27 @@ class CustomFieldChoiceSetTest(APIViewTestCases.APIViewTestCase):
     create_data = [
         {
             'name': 'Choice Set 4',
-            'extra_choices': ['4A', '4B', '4C'],
+            'extra_choices': [
+                ['4A', 'Choice 1'],
+                ['4B', 'Choice 2'],
+                ['4C', 'Choice 3'],
+            ],
         },
         {
             'name': 'Choice Set 5',
-            'extra_choices': ['5A', '5B', '5C'],
+            'extra_choices': [
+                ['5A', 'Choice 1'],
+                ['5B', 'Choice 2'],
+                ['5C', 'Choice 3'],
+            ],
         },
         {
             'name': 'Choice Set 6',
-            'extra_choices': ['6A', '6B', '6C'],
+            'extra_choices': [
+                ['6A', 'Choice 1'],
+                ['6B', 'Choice 2'],
+                ['6C', 'Choice 3'],
+            ],
         },
     ]
     bulk_update_data = {
@@ -155,7 +167,11 @@ class CustomFieldChoiceSetTest(APIViewTestCases.APIViewTestCase):
     }
     update_data = {
         'name': 'Choice Set X',
-        'extra_choices': ['X1', 'X2', 'X3'],
+        'extra_choices': [
+            ['X1', 'Choice 1'],
+            ['X2', 'Choice 2'],
+            ['X3', 'Choice 3'],
+        ],
         'description': 'New description',
     }