rename hub to notifications

src/Notifications/Program.cs

@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+
+namespace Bit.Notifications
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            WebHost
+                .CreateDefaultBuilder(args)
+                .UseStartup<Startup>()
+                // ref: https://github.com/aspnet/KestrelHttpServer/issues/2694
+                .UseLibuv()
+                .Build()
+                .Run();
+        }
+    }
+}