hdu: add MST and MR

"All torrents must be seeded for a minimum of 72 hours or 1.0 ratio per torrent..."
https://pt.upxin.net/rules.php

Global min MR ranges from 0.5-0.9 depending on amount downloaded.
https://pt.upxin.net/faq.php

src/Jackett.Common/Definitions/hdu.yml

@@ -131,6 +131,11 @@ search:
         img.pro_free2up: 2
         img.pro_2up: 2
         "*": 1
+    minimumratio:
+      text: 1.0
+    minimumseedtime:
+      # 3 days (as seconds = 3 x 24 x 60 x 60)
+      text: 259200
     description:
       selector: td.rowfollow:nth-child(2)
       remove: a, img