Added a page to CategoryProposedDeletion on the wiki

[Jeremy McNaughton <jeremy@deptadapt.org>]

Hello,

I added a page to CategoryProposedDeletion on the wiki because it
recommends installing upstream proprietary packages compiled for
Ubuntu, intructs the user to patch files provided by packages, and for
the URL not following wiki convention.

Here is a link to the page with my revision.

https://wiki.debian.org/How%20to%20install%20official%20AMDGPU%20linux%20driver%20with%20kernel%204.19.x%20on%20Stretch%20and%20Buster?action=recall&rev=30

I didn't feel comfortable deleting it unilaterally but I do not think
this advice belongs on the Debian wiki. 

Thanks,

Jeremy McNaughton