implement most of the basic stuff that was suggested in #8290

lib/private/appframework/dependencyinjection/dicontainer.php

lib/private/appframework/http/dispatcher.php

...e/appframework/middleware/security/securitymiddleware.php

...rivate/appframework/utility/controllermethodreflector.php

lib/public/appframework/controller.php

lib/public/appframework/http/iresponseserializer.php

lib/public/appframework/http/templateresponse.php

tests/lib/appframework/controller/ControllerTest.php

tests/lib/appframework/http/DispatcherTest.php

tests/lib/appframework/http/TemplateResponseTest.php

...pframework/middleware/security/SecurityMiddlewareTest.php

...ib/appframework/utility/ControllerMethodReflectorTest.php