Implementation of SilverStripe App object to consolidate global state

[Damian Mooyman]

Hello all, we have raised an RFC around proposal for implementation of an App object in SilverStripe 4.

Please see https://github.com/silverstripe/silverstripe-framework/issues/6681 and leave your feedback and thourghts there if you would like to contribute.

We have since come up with two suggestions on what this interface could look like:

 - https://gist.github.com/sminnee/7fd620a026d551730a088d5e82e542f0

 - https://gist.github.com/tractorcow/c0656a334c13eac8ae252610d226a1c6

Thanks!

Kind regards,

Damian Mooyman