Introduce new DI container

- Adding Friendica\DI class for getting dynamic classes
- Replacing BaseObject::getApp() with this class

src/DI.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Friendica;
+
+use Dice\Dice;
+
+/**
+ * This class is capable of getting all dynamic created classes
+ *
+ * There has to be a "method" phpDoc for each new class, containing result class for a proper matching
+ *
+ * @method static App app()
+ */
+class DI
+{
+	/** @var Dice */
+	private static $dice;
+
+	public static function init(Dice $dice)
+	{
+		self::$dice = $dice;
+	}
+
+	public static function __callStatic($name, $arguments)
+	{
+		switch ($name) {
+			case 'app':
+				return self::$dice->create(App::class, $arguments);
+			default:
+				return null;
+		}
+	}
+}