imageicc: Read ICC color profile embedded in jpg/png/gif/tiff image

The title describes it all.

Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
LICENSE		LICENSE
README.md		README.md
doc.go		doc.go
gif.go		gif.go
go.mod		go.mod
go.sum		go.sum
jpg.go		jpg.go
main_test.go		main_test.go
png.go		png.go
tiff.go		tiff.go

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