Amazon Q Test Generation: Adding telemetry metric for /test for files outside of workspace. (#951)

## Problem
/test does not run workflow for external files in a workspace instead
runs conversation APIs to produce tests for user in chat.

## Solution
Adding metric to check whether target file in editor is a file in active
workspace.
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## License

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

Author: ashishrp-aws

telemetry/definitions/commonDefinitions.json

@@ -1433,6 +1433,11 @@
             "type": "boolean",
             "description": "True if user selected code snippet as input else false"
         },
+        {
+            "name": "isFileInWorkspace",
+            "type": "boolean",
+            "description": "Indicate if the file is in the current workspace."
+        },
         {
             "name": "isReAuth",
             "type": "boolean",
@@ -2353,6 +2358,9 @@
                     "type": "isCodeBlockSelected",
                     "required": false
                 },
+                {
+                    "type": "isFileInWorkspace"
+                },
                 {
                     "type": "isSupportedLanguage"
                 },