Refactor "Authentication" class with four main methods:

- withSession() - for auto authentication with Session/Cookie variables
- withOpenId() - for authentication with an OpenID account
- withPassword() - for authentication with Password
- setForUser() - for setting the user auth context of the current session

Refactor "Session" class - contains now "native" Session Management methods

index.php

@@ -22,5 +22,6 @@ $a = \Friendica\BaseObject::getApp();
 $a->runFrontend(
 	$dice->create(\Friendica\App\Module::class),
 	$dice->create(\Friendica\App\Router::class),
-	$dice->create(\Friendica\Core\Config\PConfiguration::class)
+	$dice->create(\Friendica\Core\Config\PConfiguration::class),
+	$dice->create(\Friendica\Core\Authentication::class)
 );