Auth Remote Tokens

1. New plugin for remote auth tokens. Extend your \Pyz\Client\Oauth\OauthDependencyProvider::getKeyLoaderPlugins to register our \Hackweekender\Client\AuthRemoteTokens\Plugin\Oauth\RemoteKeyLoaderPlugin

2. Fork of the league/oauth2-server module to add support of the OpenSSLAsymmetricKey object in CryptKey.

https://github.com/DmytroKlymanSpryker/oauth2-server