[horne] add support for horne.red (#2700)

scripts/supportedsites.py

@@ -47,6 +47,7 @@ CATEGORY_MAP = {
     "hentaihere"     : "HentaiHere",
     "hentaiimg"      : "Hentai Image",
     "hitomi"         : "Hitomi.la",
+    "horne"          : "horne",
     "idolcomplex"    : "Idol Complex",
     "illusioncardsbooru": "Illusion Game Cards",
     "imagebam"       : "ImageBam",
@@ -270,6 +271,7 @@ AUTH_MAP = {
     "fantia"         : _COOKIES,
     "flickr"         : _OAUTH,
     "furaffinity"    : _COOKIES,
+    "horne"          : "Required",
     "idolcomplex"    : "Supported",
     "imgbb"          : "Supported",
     "inkbunny"       : "Supported",