Update ygg info

blueprints/root/templates/base.pug

@@ -6,6 +6,25 @@ html(lang=g.locale)
     link(rel="stylesheet" href="/static/style/main.css")
     link(rel="icon" type="image/webp" href="/static/img/lair.webp")
 
+    //- Yggdrasil links
+    link(rel="ygg-banner" href="/static/img/88x31/lair.gif")
+
+    link(
+      rel="alternate"
+      data-ygg-type="clearnet"
+      href="https://lair.moe"
+      title="Clearnet address")
+    link(
+      rel="alternate"
+      data-ygg-type="alfis"
+      href="http://lair.ygg"
+      title="Alfis domain")
+    link(
+      rel="alternate"
+      data-ygg-type="ygg-ipv6"
+      href="http://[201:96:5188::a690:7908:da7a]"
+      title="Direct IPv6")
+
     script(src="/static/script/copy-mono.js")
 
     if request.headers.get('DNT') != "1":
@@ -24,6 +43,16 @@ html(lang=g.locale)
     meta(property="og:image" value="https://lair.moe/static/img/lair.webp")
     meta(property="og:description" value=_("description"))
 
+    //- Yggdrasil meta
+    meta(name="ygg-category" content="service")
+    meta(name="ygg-topic" content="federation")
+    meta(name="ygg-topic" content="tools")
+
+    meta(name="ygg-language" content="ru")
+    meta(name="ygg-language" content="en")
+    meta(name="ygg-language" content="de")
+    meta(name="ygg-language" content="fr")
+    meta(name="ygg-language" content="jp")
   body
     include root/templates/header.pug