Enhancement: Auto copy built-in resources to dependent project's Content folder

[GlaireDaggers]

At some point, it would be nice if BNA automatically copied any built-in effects it needed directly into a game project's Content folder as a post-build step, and additionally if as part of the Getting Started guide a post-build step was added to have the game automatically copy the entire Content folder from the project folder into the output build path.

Currently blocked on CopyToDependents hard-crashing the IDE when given a folder path to copy (need to gather crash log and send to Beefy so they can investigate)