rtmp-services: Add Web.TV streaming service

Closes jp9000/obs-studio#779

plugins/rtmp-services/data/package.json

 {
 	"url": "https://obsproject.com/obs2_update/rtmp-services",
-	"version": 47,
+	"version": 48,
 	"files": [
 		{
 			"name": "services.json",
-			"version": 47
+			"version": 48
 		}
 	]
 }

plugins/rtmp-services/data/services.json

@@ -357,6 +357,21 @@
                 }
             ]
         },
+        {
+            "name": "Web.TV",
+            "servers": [
+                {
+                    "name": "Primary",
+                    "url": "rtmp://live3.origins.web.tv/liveext"
+                }
+            ],
+            "recommended": {
+                "keyint": 2,
+                "profile": "main",
+                "max video bitrate": 3500,
+                "max audio bitrate": 160
+            }
+        },
         {
             "name": "Switchboard Live (Joicaster)",
             "servers": [