Adding first version of the api rewrite.

Removing many dependencies.

Minimal-server/GotobedServer/mdnsService.cs

@@ -0,0 +1,51 @@
+using System.Net.NetworkInformation;
+using Makaretu.Dns;
+
+public class MdsService
+{
+
+    public void Start()
+    {
+        var macAddr = (
+        from nic in NetworkInterface.GetAllNetworkInterfaces()
+        where nic.OperationalStatus == OperationalStatus.Up
+        select nic.GetPhysicalAddress().ToString()).FirstOrDefault();
+
+        var sd = new ServiceDiscovery();
+        var service = new ServiceProfile("x", "_foo._tcp", 1024);
+        service.AddProperty("mac", macAddr);
+        sd.Advertise(service);
+    }
+}
+/*
+var sd = new ServiceDiscovery();
+var service = new ServiceProfile("x", "_foo._tcp", 1024);
+service.AddProperty("mac", "bar");
+sd.Advertise(service);
+
+
+/*
+var service = "...";
+var mdns = new MulticastService();
+mdns.QueryReceived += (s, e) =>
+{
+    var msg = e.Message;
+    if (msg.Questions.Any(q => q.Name == service))
+    {
+        var res = msg.CreateResponse();
+        var addresses = MulticastService.GetIPAddresses()
+            .Where(ip => ip.AddressFamily == AddressFamily.InterNetwork);
+        foreach (var address in addresses)
+        {
+            res.Answers.Add(new ARecord
+            {
+                Name = service,
+                Address = address
+            });
+        }
+        mdns.SendAnswer(res);
+    }
+};
+mdns.Start();
+
+*/