refactor a good bit of stuff for better dependency injection

fix regular expression for T6 log parsing

Application/RCon/ConnectionState.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Net.Sockets;
+using System.Threading;
+
+namespace IW4MAdmin.Application.RCon
+{
+    /// <summary>
+    /// used to keep track of the udp connection state
+    /// </summary>
+    internal class ConnectionState
+    {
+        ~ConnectionState()
+        {
+            OnComplete.Dispose();
+            OnSentData.Dispose();
+            OnReceivedData.Dispose();
+        }
+
+        public int ConnectionAttempts { get; set; }
+        const int BufferSize = 4096;
+        public readonly byte[] ReceiveBuffer = new byte[BufferSize];
+        public readonly SemaphoreSlim OnComplete = new SemaphoreSlim(1, 1);
+        public readonly ManualResetEventSlim OnSentData = new ManualResetEventSlim(false);
+        public readonly ManualResetEventSlim OnReceivedData = new ManualResetEventSlim(false);
+        public SocketAsyncEventArgs SendEventArgs { get; set; } = new SocketAsyncEventArgs();
+        public SocketAsyncEventArgs ReceiveEventArgs { get; set; } = new SocketAsyncEventArgs();
+        public DateTime LastQuery { get; set; } = DateTime.Now;
+    }
+}