Add additional libraries to backend.go cgo statements for amd64,linux…#2

Merged

AllenDang merged 2 commits intoAllenDang:mainfrom hallum:amd64_linux_buildfix

Aug 27, 2022

+4-4

Commits on Aug 26, 2022

Add additional libraries to backend.go cgo statements for amd64,linux to build successfully
hallum
committed

Commits on Aug 27, 2022

Correct NewImVec4 args to ImVec4 fields, modified ImVec4 struct fields to align with dear imgui struct positions
hallum
committed