Proposal: Enable global_namespace_import

[provokateurin]

With configuration ['import_classes' => false, 'import_constants' => false, 'import_functions' => false]: https://cs.symfony.com/doc/rules/import/global_namespace_import.html#example-3

Main benefit for me would be exceptions, as it is a directly clear that a docblock like

/**
 * @throws Exception
 */

refers to \OCP\DB\Exception and not \Exception.
It would also safe some lines in the imports making them a bit more readable.

We could also switch it around, but I think we should settle on some configuration for this rule to have it the same everywhere.

[nickvergessen]

I agree that for global classes it's better readable/understandable if they are fully qualified inline

[blizzz]

I am fine either way