Add Gotify as notification provider

src/Ombi.Api.Gotify/GotifyApi.cs

@@ -0,0 +1,36 @@
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace Ombi.Api.Gotify
+{
+    public class GotifyApi : IGotifyApi
+    {
+        public GotifyApi(IApi api)
+        {
+            _api = api;
+        }
+
+        private readonly IApi _api;
+
+        public async Task PushAsync(string baseUrl, string accessToken, string subject, string body, sbyte priority)
+        {
+            var request = new Request("/message", baseUrl, HttpMethod.Post);
+            request.AddQueryString("token", accessToken);
+
+            request.AddHeader("Access-Token", accessToken);
+            request.ApplicationJsonContentType();
+
+
+            var jsonBody = new
+            {
+                message = body,
+                title = subject,
+                priority = priority
+            };
+
+            request.AddJsonBody(jsonBody);
+
+            await _api.Request(request);
+        }
+    }
+}