Deleting CF values when the CF is deleted (#91)

Co-authored-by: David <david.katalinic@asseco-see.hr>

src/App/Models/CustomField.php

@@ -65,6 +65,7 @@ protected static function booted()
         static::deleted(function (self $customField) {
             $customField->parent()->delete();
             $customField->children()->delete();
+            $customField->values()->delete();
         });
 
         static::saving(function (self $customField) {