Add Editor Layout Loading/Saving

[datacrystals]

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[datacrystals]

This task should implement functionality where there is a class that loads and writes editor layouts to the "EditorAssets" directory (EditorAssets/Layouts/{Layout Files Here}). These layouts should be formatted using YAML (See the other ERS classes that use YAML::CPP to take care of this). You'll want to store some sort of bool for each window in the editor that enables/disables them as well as the ini generated by imgui.

A useful example might be this: ocornut/imgui#4033