Add git-remote-gcrypt

Working on Tails requires to use git-remote-gcrypt to get access to some of our git repos. So it should be shipped in Tails.

Feature Branch: feature/8878-add-git-remote-gcrypt

Original created by @bertagaz on 8878 (Redmine)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information