Add support for disallowing namespaces

[ruudk]

See #50

Currently it only triggers on FullyQualified nodes.

    disallowedNamespaces:
        -
            namespace: 'Symfony\Component\HttpFoundation\RequestStack'
            message: 'pass Request via controller instead'
            allowIn:
                - tests/*
        -
            namespace: 'Assert\*'
            message: 'use Webmozart\Assert instead'

[ruudk]

You could think: Why not just use disallowedMethodCalls and use a wildcard like Symfony\Component\HttpFoundation\RequestStack::*'.

That would work, but only for method calls.

In my case I wanted to prevent the use of RequestStack like this:

class MyClass
{
    private $requestStack;
    
    public function __construct(RequestStack $requestStack) 
    {
        $this->requestStack = $requestStack;
    }

    public function doSomething()
    {
        // Pass the object to something else.... we didn't call anything
        $model = Model::createFromRequestStack($this->requestStack);
    }
}

[spaze]

Thanks. I'm fine with a new config key. Can you please squash the commits or somehow fix the commits so I can review? The "Add tests" commit now changes other areas too, guess it shouldn't.

[ruudk]

I'm not with my computer anymore. Please review from GH diff view. Before we merge it I'll squash it.

[spaze]

Quick round 1 of review.

Please also squash the commits to remove unrelated changes, thanks.

[ruudk]

Updated the PR. Much better now.

[spaze]

Thank you, much better, agree 👍 Made minor changes (some whitespace removal, added namespaces to the docs, removed one @throws) directly and merged. Will probably release right away.

[spaze]

Just released this in 1.3.0, thank you for your contribution.

[ruudk]

Thanks for merging all the PR's and the kind words in the release notes 💙