feat: store shard status in Redis

PluralKit.Core/Database/Repository/ModelRepository.Shards.cs

@@ -1,28 +0,0 @@
-using Dapper;
-
-using NodaTime;
-
-namespace PluralKit.Core;
-
-public partial class ModelRepository
-{
-    public Task<IEnumerable<PKShardInfo>> GetShards() =>
-        _db.Execute(conn => conn.QueryAsync<PKShardInfo>("select * from shards order by id"));
-
-    public Task SetShardStatus(IPKConnection conn, int shard, PKShardInfo.ShardStatus status) =>
-        conn.ExecuteAsync(
-            "insert into shards (id, status) values (@Id, @Status) on conflict (id) do update set status = @Status",
-            new { Id = shard, Status = status });
-
-    public Task ClearShardStatus() => _db.Execute(conn => conn.ExecuteAsync("update shards set status = 0"));
-
-    public Task RegisterShardHeartbeat(IPKConnection conn, int shard, Duration ping) =>
-        conn.ExecuteAsync(
-            "insert into shards (id, last_heartbeat, ping) values (@Id, now(), @Ping) on conflict (id) do update set last_heartbeat = now(), ping = @Ping",
-            new { Id = shard, Ping = ping.TotalSeconds });
-
-    public Task RegisterShardConnection(IPKConnection conn, int shard) =>
-        conn.ExecuteAsync(
-            "insert into shards (id, last_connection) values (@Id, now()) on conflict (id) do update set last_connection = now()",
-            new { Id = shard });
-}