[RFC] Import types with use statements only for non native types

[phansys]

This proposed fixer should perform the following transformation:
ACTUAL:

namespace Example;

use SomeCustomType;
use Some\Qcn;
use RuntimeException;

class SomeClass
{
    public function myMethod()
    {
        throw new RuntimeException();
    }
}

EXPECTED:

namespace Example;

use SomeCustomType;
use Some\Qcn;

class SomeClass
{
    public function myMethod()
    {
        throw new \RuntimeException();
    }
}

[keradus]

i remember there were request to do the other way around

[keradus]

👎 for it from me, hard to implement when you want to remove import only for PHP-defined global classes and not user-defined global classes and have it working for all different PHPs, also, it makes execution slower... if one want to have it he could keep it without fixer I would say, if one want to automatically do the importing (Eg only before creating release) the fixer would be nice.

but yeah, let us wait for more comments.

[GrahamCampbell]

Looks doable with little pain, but we might have to be careful when it comes to updating phpdoc.

[GrahamCampbell]

The phpdoc side of things maybe doesn;t make this worth the effort.

[localheinz]

I was just thinking about it, and wanted to open a ticket, then I ended up here.

I like it!

[gharlan]

#4355 is merged, should we close here?
(the fixer does not differientiate between native/non-native elements, only between global/non-global)

[SpacePossum]

Yeah, looks good to me. Feel free to comment if I missed a detail in the discussion. Thanks again @gharlan for writing the fixer!