fix(misc): Update the data source name, provide a /datasources example customization for debug (#3036)

* fix(misc):Update the data source name, provide  a /datasources

Update the imports for a few things to match, to avoid 2 versions

Fix the datasources name

pr:Make the data source selector configurable

* Updated data source selector page as requested

* PR fixes

extensions/tmtv/package.json

@@ -38,6 +38,6 @@
   },
   "dependencies": {
     "@babel/runtime": "7.7.6",
-    "classnames": "^2.2.6"
+    "classnames": "^2.3.2"
   }
 }