Add backup git mirror
Adds a Gitea git mirror of the monero repo to the downloads page because the more the merrier.
21:27 < dsc_> sarang, moneromooo: https://git.pwned.systems/monero/monero 21:28 < dsc_> I've set it to update every 5 minutes 21:30 < moneromooo> Thanks. 21:34 < moneromooo> Hrm. I just look at how to add a link to it to the getmonero.org site, but the text seems separated in several places and I quickly lost interest. If anybody else wants to, feel free... looks like some mix of _i18n/en.yml and _data/downloads.yml.