Allow Dot Notation in View File Paths

[gin0115]

We currently have 2 implementations of Renderable, PHP and BladeOne

BladeOne being based on Blade takes a view path with no file extension and uses dot notation in the file paths.

This would be nice to include this as an option with the PHPEngine, so that both of these can be swapped at will, without the difference in file path naming.

[gin0115]

It should be possible to add the following

• $view->render('path.to.file', []);
• $view->render('path.to.file.php', []);

and have the following executed

• $view->render('path/to/file.php', []);