Add Ghostarchive as an archive to submit URIs

[machawk1]

https://ghostarchive.org/

[machawk1]

They appear to use an approach like archive.md, except with an underlying Webrecorder stack for replay. They also don't support Memento for access just yet.

curl -d "archive=https://matkelly.com" "https://ghostarchive.org/archive2"

...will produce a 302 redirect in the Location response header to something akin to /archive/yzBNb.