Add detection of deprecated Attributes usage

[Nemrtvej]

Hello,

would it be possible to also report a case where code uses an Attribute which is marked with @deprecated?

e.g. Given I have a following code:

<?php
/**
 * @deprecated 
 */
#[\Attribute]
final class DoSomethingTheOldWay
{
}


final class SomeDTO 
{
    #[\DoSomethingTheOldWay]
    public readonly string $property;
}

When I run this plugin.
Then the output will warn me that SomeDTO::$property is using a deprecated Attribute.

[ondrejmirtes]

Did it in PHPStan core (while phpstan-deprecation-rules must be also installed) because it was easiest and took me just a few minutes: phpstan/phpstan-src@e46b0b4

[github-actions]

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