Make use of PHP 8.4.x features

[vardumper]

Since this is 8.4 I can:

• use property hooks (instead of getters/setters) - figure out what to do in cases where current setter body has some logic.
• no need for parentheses in demo code
• asymmetric visibility - could be interesting for enums and attributes (public private(set) string $href and public protected(set) BackedEnum $enum)

[vardumper]

I don't see how the code becomes more readable or better by moving get/set into property.