Add support for hydra:manages

[dunglas]

See HydraCG/Specifications#195.
We should also be able to remove remove this now useless block:

core/src/Hydra/Serializer/DocumentationNormalizer.php

Lines 104 to 109 in 345612c

	[
	'owl:equivalentClass' => [
	'owl:onProperty' => ['@id' => 'hydra:member'],
	'owl:allValuesFrom' => ['@id' => $prefixedShortName],
	],
	],

https://github.com/api-platform/api-doc-parser must also be patched.