Redirect to sign in if unauthenticated users download private projects

Problem to solve

Redirect to sign in if unauthenticated users download private projects

It will solve just displaying raw text

Proposal

Currently, those URLs display only RAW text You need to sign in or sign up before continuing.

https://gitlab.com/yo/dorks/-/archive/master/dorks-master.tar
https://gitlab.com/yo/dorks/-/archive/master/dorks-master.tar.bz2
https://gitlab.com/yo/dorks/-/archive/master/dorks-master.tar.gz

For ZIP File I created an Issue

https://gitlab.com/yo/dorks/-/archive/master/dorks-master.zip -> gitlab-ce#62613