Update PHPUnit from attributes to annotation

[mattstauffer]

Before this PR, Duster recommended/fixed to the PHPUnit now-deprecated annotations (/** @test */). This PR updates it to use the new attributes (#[Test]).

Here's the concern: it also re-writes every other PHPUnit annotation (@dataProvider, @covers, @depends, …) into the attribute form.

Pros

• Resolves the PHPUnit 11.5 deprecation warning; forward-compatible with PHPUnit 12, where doc-comment metadata is removed entirely
• Modernizes all the other PHPUnit annotations PHPUnit is deprecating
• Only touches PHPUnit metadata; leaves general PHPDoc (@param, @return, @var, @throws, …) alone.

Cons

• Huge re-write/Duster failure on first run for people with codebases written using the older syntax, which makes me wonder if we have to attach this to a larger release
• Attributes require PHP 8 / PHPUnit 10+. Projects on older versions will now need to override this rule locally

Closes #219

[gcavanunez]

I think we should adopt this as Duster's Pint default, but release it as a major version.

Since this change drops PHPUnit 9 support because it won't pickup test_foo() after it's transformed to #[Test] foo(). This mainly affects Laravel 9 and older projects.

What do you think about shipping this as the next mayor version and highlighting PHPUnit 10+ as the baseline?