feat(ws): metrics (#9005)

* feat(WebSocketManager): fetch status

* feat(WebSocketShard): heartbeat event

* chore: ci

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/ws/src/strategies/sharding/SimpleShardingStrategy.ts

@@ -70,4 +70,11 @@ export class SimpleShardingStrategy implements IShardingStrategy {
 		if (!shard) throw new Error(`Shard ${shardId} not found`);
 		return shard.send(payload);
 	}
+
+	/**
+	 * {@inheritDoc IShardingStrategy.fetchStatus}
+	 */
+	public async fetchStatus() {
+		return this.shards.mapValues((shard) => shard.status);
+	}
 }