Set properties autowired with @required as initialized

[raalderink]

Fixes #346

[raalderink]

@ondrejmirtes could you re-review this PR please? Thank you :)

[ondrejmirtes]

Please fetch the rule with $container->getByType(UninitializedPropertyRule::class). It should be possible. That way it doesn't have to be in the baseline.

[raalderink]

I've done that and removed it from the baseline, however, it still fails on the same thing;
Accessing PHPStan\Rules\Properties\UninitializedPropertyRule::class is not covered by backward compatibility promise. The class might change in a minor PHPStan version.

[ondrejmirtes]

Please remove the inline @var.

[raalderink]

On PHP 7.3 and lower this will throw the following;
Call to method getMethods() on an unknown class PHPStan\BetterReflection\Reflection\Adapter\ReflectionEnum.
I'm not quite sure what to do with this, as I'm confused as to why it would do this only on PHP 7.3 and lower

[raalderink]

I have a couple issues here which I'm having a hard time getting resolved, as they fail on some PHP versions and succeed on others. I've baselined them, but unfortunately reportUnmatchedIgnoredErrors is on, which means it will still fail on some and succeed on others.

This following error is actually also baselined in phpstan-src, in enum-adapter-errors.neon. Due to that, I assume it's a known issue for PHP 7.2 and 7.3, but due to the reportUnmatchedIgnoredErrors, I can't really baseline this in this project. How would you want me to solve this issue?

-
	message: "#^Call to method getMethods\\(\\) on an unknown class PHPStan\\\\BetterReflection\\\\Reflection\\\\Adapter\\\\ReflectionEnum\\.$#"
	count: 1
	path: src/Symfony/RequiredAutowiringExtension.php

Secondly, on the lowest dependency builds, I get the following errors. On the highest dependencies, this builds correctly. What I've done is removed the class_exists like you asked, and instead used the class-string as string itself. I am having a lot of trouble in finding where this issue lies, and am uncertain of a solution. This is why I had the class_exists in the first place, and later tried it by including the actual symfony-contracts package that contains it (it makes sense that you don't want that to be included though). Could you please advise on how to approach this and be able to solve this issue?

-
	message: "#^Parameter \\#1 \\$name of method PHPStan\\\\BetterReflection\\\\Reflection\\\\Adapter\\\\ReflectionProperty\\:\\:getAttributes\\(\\) expects class\\-string\\|null, string given\\.$#"
	count: 1
	path: src/Symfony/RequiredAutowiringExtension.php

-
	message: "#^Parameter \\#1 \\$name of method PHPStan\\\\BetterReflection\\\\Reflection\\\\Adapter\\\\ReflectionMethod\\:\\:getAttributes\\(\\) expects class\\-string\\|null, string given\\.$#"
	count: 1
	path: src/Symfony/RequiredAutowiringExtension.php

These are the only things holding this PR back, so hopefully you can help me out by pointing me towards a solution here. Thanks @ondrejmirtes!

[ondrejmirtes]

Solved it, mainly with phpstan/phpstan-src@2b9af36, but also locking contracts package version to a newer one :)

[ondrejmirtes]

Thank you.