Main goal is to bring implementations, rules and examples closer together.
Another advantage is that the rule's layouts are in line with other
`@SwiftSyntaxRule`s.
After the refactoring, violation messages can be
better adapted to the object causing the issue. Violation positions
should be harmonized and more cases for protocols, subscripts and
deinitializers can be added.
With the binding of configurations to their associated rule types
"unknown configuration" errors can be made more specific mentioning
also the rule's identifier in the printed message.
Danny Mösch
JP Simard