Add retraktarr to arr-services.json

Author: zakkarry

arr-services.json

@@ -176,6 +176,11 @@
 			"description": "chatbot used to simplify using services like Sonarr/Radarr/Ombi via chat",
 			"github_slug": "thomst08/requestrr"
 		},
+		{
+			"name": "retraktarr",
+			"description": "retraktarr is a reverse Trakt.tv list implementation for Radarr/Sonarr that creates Trakt.tv lists for your movies/series using APIs.",
+			"github_slug": "zakkarry/retraktarr"
+		},
 		{
 			"name": "Rollarr",
 			"description": "Automatic Pre-roll script with a GUI for Plex (Archived)",