Link field type

Alot of refactoring and cleanup but I think its working really solid now and needs some user testing.

I had a few minutes to test this patch.

Below are my basic steps to review

• Check out the MR
• Clear cache
• Add custom field to page content type
• Create a link field using default values
• Create a link field that only shows URL, placeholder, attributes, etc...
• Confirmed default link field worked as expected
• Confirmed customize link field worked as expected

The most immediate minor issue I found was adding a new link field logged the below warning multiple times.

Deprecated function: Creation of dynamic property Drupal\custom_field\Plugin\DataType\CustomFieldLink::$value is deprecated in Drupal\Core\TypedData\TypedData->setValue() (line 102 of core/lib/Drupal/Core/TypedData/TypedData.php).

Thanks for the review Jake! I just pushed a commit that should fix the deprecation warning.

Everything is checking out on this feature and working properly so calling it good.

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