persist client count history data across reboots and allow for configurable timespan

SharedLibraryCore/Dtos/ClientHistoryInfo.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+
+namespace SharedLibraryCore.Dtos
+{
+    public class ClientHistoryInfo
+    {
+        public long ServerId { get; set; }
+        public List<ClientCountSnapshot> ClientCounts { get; set; }
+    }
+
+    public class ClientCountSnapshot
+    {
+        public DateTime Time { get; set; }
+        public string TimeString => Time.ToString("yyyy-MM-ddTHH:mm:ssZ");
+        public int ClientCount { get; set; }
+    }
+}

SharedLibraryCore/Dtos/ServerInfo.cs

@@ -17,6 +17,7 @@ namespace SharedLibraryCore.Dtos
         public List<ChatInfo> ChatHistory { get; set; }
         public List<PlayerInfo> Players { get; set; }
         public Helpers.PlayerHistory[] PlayerHistory { get; set; }
+        public List<ClientCountSnapshot> ClientCountHistory { get; set; }
         public long ID { get; set; }
         public bool Online { get; set; }
         public string ConnectProtocolUrl { get; set; }