Abilities API integration: Refactor to extract Abilities base class and leverage internal post types in child classes (#264)

Author: priethor

includes/abilities/abilities-integration.php renamed to includes/abilities/class-scf-abilities-integration.php

@@ -39,6 +39,7 @@ public function init() {
 				return;
 			}
 
+			acf_include( 'includes/abilities/class-scf-internal-post-type-abilities.php' );
 			acf_include( 'includes/abilities/class-scf-post-type-abilities.php' );
 			acf_include( 'includes/abilities/class-scf-taxonomy-abilities.php' );
 		}