Custom Field module integration

The Custom Field module is currently a 1-to-1 replacement for the Flexfield module. Providing basic support for the Custom Field module is not a lot of work, and I can do the initial setup. My hope is with some baseline support; we can push the Custom Field module forward toward being stable.

Below are my notes for creating an MVP integration

Notes

• The goal is feature parity with flexfield.module
• Use Recipe with Nutrition Information as the development example.
• Track features or suggestions for the custom_field.module.
• schemadotorg_custom_field.module should be marked as experimental
• custom_field.module solution is similar to flexfield.module

Tasks

• Copy schemadotorg_flexfield.module and rename schemadotorg_custom_field.module
• Update hook_schemadotorg_property_field_alter()
• Confirm field storage configuration
• Confirm field instance configuration
• Confirm form display settings
• Confirm view display settings
• Update schemadotorg_flexfield_preprocess_flexfield()
• Update schemadotorg_flexfield_schemadotorg_jsonld_schema_property_alter()
• Add SchemaDotOrgCustomFieldManager service
• Add basic test coverage for the manager service

Since the module is marked as experimental, I am inclined to merge it and make additional improvements as needed.

Automatically closed - issue fixed for 2 weeks with no activity.