Find package for vsg projects#13

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robertosfield wants to merge 2 commits intotimoore:masterfrom

robertosfield:find_package_for_VSG_projects

Commits on Oct 20, 2023

Moved the viewer.compile() to after the WorldNot::initialize(..).
robertosfield
committed
Changed the inclusion of the VSG, vsgXchange and vsgImGui to use find_package first then if that fails resort to FetchContext.
robertosfield
committed