* feat(blade): New @when directive.

* StyleCI

* fix: move to compilesConditionals + remove default expression

* fix: styleCI

* fix: when() returns the value, rather than echoing it.

* fix: Remove @throws tags

* fix: styleCI

* fix: escaping on by default

* fix: remove blade directive and adds tests for when helper

* StyleCI

* remove default, add more tests.

* Remove return type

* StyleCI

* Update helpers.php

* move function

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Co-authored-by: Taylor Otwell <taylor@laravel.com>