add result to livetail metrics

Author: Keegan Irby

telemetry/definitions/commonDefinitions.json

@@ -5022,6 +5022,9 @@
                     "type": "logStreamFilterType",
                     "required": false
                 },
+                {
+                    "type": "result"
+                },
                 {
                     "type": "sessionAlreadyStarted",
                     "required": true
@@ -5040,6 +5043,9 @@
                     "type": "duration",
                     "required": true
                 },
+                {
+                    "type": "result"
+                },
                 {
                     "type": "source",
                     "required": true