Improve oauth2 support

[chriskapp]

Oauth2 support is currently available but not fully tested and documented. We need to improve the test cases and code coverage. Also we must provide a chapter in the manual howto enable oauth authentication for an API endpoint.

[mmuruev]

So what's the status? I need auth, and how to manage it.

[chriskapp]

If you have an access token you can use the authentication filter. If you need an OAuth2 server to issue an access token you can use the PSX\Oauth2\Provider\TokenAbstract class but this is the part which is not documented yet.

[mmuruev]

Can I use 'regualar' session like auth to? For app UI for example. Does it provide support for this?

[chriskapp]

Sessions are not directly supported for authentication since for API endpoints you mostly want to use OAuth2. But you can easily write your own filter or use the session inside a controller. There is also a session service to set/get values from the php session so you dont have to use $_SESSION in your controller.