[+FEATURE] Fluid (View): Fluid Standalone view

In order to be able to use Fluid templates beyond the Extbase plugin context
(e.g. to render E-Mail templates or to use the new FLUIDTEMPLATE content object)
we created a new template view, that encapsulates inner workings and provides
an easy-to-use API:

$view = t3lib_div::makeInstance('Tx_Fluid_View_TemplateView');
$view->setTemplatePathAndFilename('foo/Bar.html');
print $view->render();

Note: This has to be *forward ported* still

This relates to #10473