Array shape typings definition / Object-like arrays

# Feature request

Is there a planned support for array shapes typings? Similar to what psalm has: https://psalm.dev/docs/docblock_type_syntax/#object-like-arrays

e.g.:
```php
/**
* @param array{foo:string, bar:?int} $a
*/
function foo(array $a): void;

foo(['baz' => 42]); // triggers error
```
