Added Mqtt and SignalR

Birdmap.API/Services/Hubs/DevicesHub.cs

@@ -0,0 +1,36 @@
+using Microsoft.AspNetCore.SignalR;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Threading.Tasks;
+
+namespace Birdmap.API.Services.Hubs
+{
+    public class DevicesHub : Hub<IDevicesHubClient>
+    {
+        private readonly ILogger<DevicesHub> _logger;
+
+        public DevicesHub(ILogger<DevicesHub> logger)
+        {
+            _logger = logger;
+        }
+
+        public override Task OnConnectedAsync()
+        {
+            _logger.LogInformation("Client connected.");
+
+            return base.OnConnectedAsync();
+        }
+
+        public override Task OnDisconnectedAsync(Exception exception)
+        {
+            _logger.LogInformation("Client disconnected.");
+
+            return base.OnDisconnectedAsync(exception);
+        }
+
+        public Task UserJoinedAsync(Guid deviceId, DateTime date, double probability)
+        {
+            return Clients.All.NotifyDeviceAsync(deviceId, date, probability);
+        }
+    }
+}

Birdmap.API/Services/Hubs/IDevicesHubClient.cs

@@ -0,0 +1,10 @@
+using System;
+using System.Threading.Tasks;
+
+namespace Birdmap.API.Services.Hubs
+{
+    public interface IDevicesHubClient
+    {
+        Task NotifyDeviceAsync(Guid deviceId, DateTime date, double probability);
+    }
+}