Implement config object

[flangofas]

This is the implementation of #6

It can be accessed by the Application or Command Object.

Use cases:

$config = $app->getConfig();
$config = $command->getConfig();

//Default params:
$params = [
    'bootstrapDir'   => 'app',
    'commandsDir'    => 'Application/Commands',
    'indexDir'       => 'public',
    'indexFile'      => 'index.php',
    'rootDir'        => 'Absolute path of the project\'s root directory',
    'sourceDir'      => 'src',
];

//Retrieve value
$config['commandsDir'];
//OR
$config->get('commandsDir');

Additional params can be stored as follows:

$config['newParam'] = 'value';
//OR
$config->set('newParam') = 'value';

Supported formats

• [x] JSON
• [x] PHP
• [ ] Yaml

[l0gicgate]

@flangofas I created a new draft in #14. I think it's probably an easier starting point since you essentially would have to entirely rewrite this from the reviewers' directions.

Please don't take offense. Thank you for this initial contribution it gave us a good base to see where we wanted to start at least so it wasn't all done for nothing.

[flangofas]

@l0gicgate No offense taken, I agree. The decisions were not made and it wasn't quite clear how it is going to be implemented, I should've asked more questions in the first place.