website: Add blog post for "GUIX" gem5 users' workshop

Change-Id: Iba22bd298328e7b17cfa7dbdc148e08a93d68cce
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/59909
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby Bruce <bbruce@ucdavis.edu>
1 file changed