Update hitbox.tv ingest servers list

Added: EU-South

plugins/rtmp-services/data/services.json

@@ -122,6 +122,10 @@
                 "name": "EU-North: London, United Kingdom",
                 "url": "rtmp://live.lhr.hitbox.tv/push"
             },
+            {
+                "name": "EU-South: Milan, Italia",
+                "url": "rtmp://live.mxp.hitbox.tv/push"
+            },
             {
                 "name": "EU-Central: Nurnberg, Germany",
                 "url": "rtmp://live.nbg.hitbox.tv/push"