[WIP] Improve link resource

- Adding ``guzzle/parser`` for the link templated.
- Adding request get directly in the link.
- Adding docs href.
- Change curie array by a link.

**Edit:**
- Adding curie object
- Adding unit tests
It may make sense, but a curie is not realy a link.

It bothers me to use a link like a curie.
```php
$resource->getLink('foo') instanceof Curie
```