[FEATURE] Add config and use composer autoloader.

We use composer already to install SabreDAV. Include config
composer.(json|lock) to install and manage more dependencies
in future.
Also provide PSR-4 autoloading for our namespaced classes, e.g.
"Zotlabs\". To regenerate autoloader maps use:
$ composer install --optimize-autoloader --no-dev

We could also remove the whole vendor/ folder from our repository, but
that would need changes in deployment and how to install hubs and needs
more discussion first.

Zotlabs/Daemon/Master.php

@@ -24,8 +24,7 @@ class Master {
 	static public function Release($argc,$argv) {
 		cli_startup();
 		logger('Master: release: ' . print_r($argv,true), LOGGER_ALL,LOG_DEBUG);
-		require_once('Zotlabs/Daemon/' . $argv[0] . '.php');
 		$cls = '\\Zotlabs\\Daemon\\' . $argv[0];
 		$cls::run($argc,$argv);
 	}	
-}
+}