PoC - plugins for different output types

[tapiau]

This is raw and ugly Aprils Fools fun work, so please do not judge code quality.

Test it in notebook: $this->zPHP->HTML("italic & bold"); $this->zPHP->Image(file_get_contents('image.jpg'));

Plugins are loaded with dynamic namespaces, so they can be edited/added/removed without restarting kernel.