Adding telemetry framework to migration extension (#15284)

* Adding telemetry to sql-migration

* Adding some telemetry helper functions

* removing unncessary telemetry

* removing unncessary imports

* Changing name of telemetry sender methods and removing unused functions.

* Removing extra whitespace

* Fixing a typo

extensions/sql-migration/package.json

@@ -7,6 +7,7 @@
   "preview": true,
   "license": "https://raw.githubusercontent.com/Microsoft/azuredatastudio/main/LICENSE.txt",
   "icon": "images/extension.png",
+  "aiKey": "06ba2446-fa56-40aa-853a-26b73255b723",
   "engines": {
     "vscode": "*",
     "azdata": ">=1.27.0"
@@ -79,6 +80,7 @@
     ]
   },
   "dependencies": {
+    "@microsoft/ads-extension-telemetry": "^1.1.3",
     "vscode-nls": "^3.2.1"
   },
   "__metadata": {