Added testExplorer and notebooks UI automated tests (#323)

* initial commit for notbooks pupeteer tests

* Added Auth

* added try catch block with screenshot for error

* Addressed PR comments

* renamed params

* renamed param

* fixed formatting error

* Updates mongo spec to remove waitFor on already awaited selector

* added logging statements

* format errors fixed

* added ci env variables

* increased delay for render

* removed logging

* added delay

* fix format error

* removed deletion

* reverted package.json change

Co-authored-by: zfoster <notzachfoster@gmail.com>

package.json

@@ -4,7 +4,9 @@
   "description": "Cosmos Explorer",
   "main": "index.js",
   "dependencies": {
+    "@azure/arm-cosmosdb": "9.1.0",
     "@azure/cosmos": "3.9.0",
+    "@azure/identity": "1.1.0",
     "@azure/cosmos-language-service": "0.0.5",
     "@jupyterlab/services": "6.0.0-rc.2",
     "@jupyterlab/terminal": "3.0.0-rc.2",