Allow parentheses around arrow function body

[MidnightDesign]

I would like to be able to use the UselessParentheses sniff as it is right now, but disable it when used around an arrow function body like this:

$fn = fn(SomeVeryLongClassNameHere $foo): AnotherPrettyLongClassName => (
    $foo->doSomethingImpressive(trim('This is just here to demonstrate a long function body'))
);

That's basically a pattern from the JavaScript/React world that I would love to use in PHP while still detecting really useless parentheses.

Of course, one could argue that you can just use the following style:

$fn = fn(SomeVeryLongClassNameHere $foo): AnotherPrettyLongClassName =>
    $foo->doSomethingImpressive(trim('This is just here to demonstrate a long function body'));

But that's not as nice in my optinion.

[programmador]

I think the problem is alittle bit wider - it blaims also on this:

(new SomeClass())
    ->someMethod();

[programmador]

Sorry, It actually seems like my mention about "new" is not relevant. I thought that SlevomatCodingStandard.PHP.UselessParentheses was blaiming but it was SlevomatCodingStandard.ControlStructures.NewWithoutParentheses which could be disabled separately