Susbcription form - Separate fields for first name and last name - additional attributes or fields

Is your feature request related to a problem? Please describe.
• Regarding: Subscription form "/subscription/form".
• Some subscribers add only the first name, some subscribers only last name or both, but in different order etc.
• We can excract both with Subscriber.LastName or Subscriber.FirstName, but this is often wrong, due to the incorrect data situation.

Describe the solution you'd like
• Instead of one optional name field, make two separate fields for first and last name.
• Possibility to define which fields are mandatory.
• Bonus: Add some

If such a feature is already possible, my bad, please let me know.

Additional
I know this is possible with a own form over the subscriber API (#105). But this is alot of overhead in my opinion and many users are not able to accomplish that. So a minimal build in solution would be great.

Releated Issues
• #105
• #2201
• #536
• #1726