* Establish GFKSerializerField and replace get_* methods in circuits.py
* Set read_only=True
* Apply GFKSerializerField to all matching SerializerMethodFields
* Use GFKSerializerField for ObjectChangeSerializer.changed_object and EventRuleSerializer.action_object
* Create MACAddress model and migrations to convert existing .mac_address fields to standalone objects
* Add migrations
* All views/filtering working and documentation done; no unit tests yet
* Redo migrations following VLAN Translation
* Remove mac_address filter fields and add table columns for device/vm
* Remove unnecessary "bulk rename"
* Fix filterset tests for Device
* Fix filterset tests for Interface
* Fix tests on single-object forms
* Fix serializer tests
* Fix filterset tests for VMInterface
* Fix filterset tests for Device and VirtualMachine
* Move new field check into lookup_map iteration
* Fix general MACAddress filter tests
* Add GraphQL types/filters/schema
* Fix bulk edit/create tests (bulk editing Interfaces will be unsupported because of inheritance from ComponentBulkEditForm)
* Make mac_address read_only on InterfaceSerializer/VMInterfaceSerializer
* Undo unrelated work
* Cleanup unused IPAddress derived stuff
* API endpoints
* Add serializer objects to interface serializers
* Clean up unnecessary bulk create forms/views/routes
* Add SearchIndex and adjust indexable fields for Interface and VMInterface
* Reorganize MACAddress classes out of association with DeviceComponents
* Move MACAddressSerializer
* Enforce saving only a single is_primary MACAddress per interface/vminterface
* Perform is_primary validation on MACAddress model and just check if one already exists for the interface
* Remove form-level validation
* Fix check for current is_primary setting when reassigning
* Model cleanup
* Documentation notes and cleanup
* Simplify serializer and add ip_addresses
* Add to VMInterfaceSerializer too
* Style cleanup
* Standardize "MAC Address" instead of "MAC"
* Remove unused views
* Add is_primary field for bulk edit
* HTML cleanup and add copy-to-clipboard button
* Remove mac_address from Interface and VMInterface bulk-edit forms
* Add device and VM filtering
* Use combined assigned_object_parent in table to match structure of IPAddressTable
* Add GFK fields to MACAddressSerializer
* Reorganize "Addressing" sections to remove from proximity to "Device Components" and related groupings
* Clean up migrations
* Misc cleanup
* Add filterset test
* Remove mac_address field from interface forms
* Designate primary MAC address via a ForeignKey on the interface models
* Add serializer fields for primary_mac_address
* Update docs
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Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>
