Turning CS:S playermodels into Garrys mod playermodels


I wanted to know if it would be possible to turn CS:S playermodels into working Garry’s mod playermodels. I believe this is called hexing, but I have no idea how to do this and if it will actually work I’ve only seen weapon models hexed.

Would it be possibly to turn these playermodels into models that work with Gmod pointshop for example, and how would one do that if it were possible?

Thank you in advance to any helpers