add simulation class to engine project
update UI code to live in a namespace and use header guard that matches xcode expectation
stub out simulation as reference type
stub out simulation update struct
reorder simulation classes
fix casing on simulation update property
add simple update method and remove redundant default declarations
link lib project to app project
set headers to public and deployment folder for headers
update header and library search paths for ui project
hook up hello world from laconomie lib to ui