Support to return all loaded environments

[Costamilam]

It is now possible to get all the environments loaded as an associative array

[brcontainer]

Now configuration files have been separated from App::env() (with the exception of ./system/application/Config/config.php) and can be loaded by the class Inphinit\Experimental\Config using:

<?php
use Inphinit\Experimental\Config;

...

var_dump(Config::load('example')->foobar);

or

var_dump(Config::load('example')->get('foobar'));

I'll document it soon.