* includes components, registry export & blueprints
* overhauled settings / config to match the new structure
* keeping the different sub plugins for now
* cleaned up some of the internals of the blueprints code
* related tweaks & cleanups
* added events to blueprints : for when assets have been loaded & when a blueprint has been spawned (wip)
* various experiments with blueprints
* updated testing to make use of new crate & logic
