feat: store shard status in Redis

PluralKit.API/APIJsonExt.cs

@@ -9,30 +9,6 @@ namespace PluralKit.API;
 
 public static class APIJsonExt
 {
-    public static JArray ToJSON(this IEnumerable<PKShardInfo> shards)
-    {
-        var o = new JArray();
-
-        foreach (var shard in shards)
-        {
-            var s = new JObject();
-            s.Add("id", shard.Id);
-
-            if (shard.Status == PKShardInfo.ShardStatus.Down)
-                s.Add("status", "down");
-            else
-                s.Add("status", "up");
-
-            s.Add("ping", shard.Ping);
-            s.Add("last_heartbeat", shard.LastHeartbeat.ToString());
-            s.Add("last_connection", shard.LastConnection.ToString());
-
-            o.Add(s);
-        }
-
-        return o;
-    }
-
     public static JObject ToJson(this ModelRepository.Counts counts)
     {
         var o = new JObject();