Internals: Refactor: Moved ItemAdd(), ItemSize(), BeginGroup(), EndGroup(), SameLine(), Indent(), Unindent() to Layout section.
Internals: Refactor: Moved ItemAdd(), ItemSize(), BeginGroup(), EndGroup(), SameLine(), Indent(), Unindent() to Layout section.

nProtect/imgui,ggtucker/imgui,ggtucker/imgui,Flix01/imgui,bkaradzic/imgui,bkaradzic/imgui,Flix01/imgui,Flix01/imgui,ocornut/imgui,ggtucker/imgui,nProtect/imgui,nProtect/imgui,ocornut/imgui,aimotive/imgui-glfw,aimotive/imgui-glfw,ocornut/imgui,bkaradzic/imgui