Update shared libraries to authenticate with GCP libraries as an end-user

[mservidio]

For hosted/deployed code within CloudRun, this isn't necessary at the moment. However, for running code locally, it may be required in the future.

https://developers.google.com/identity/protocols/oauth2
https://developers.google.com/identity/sign-in/web/reference#authentication
https://github.com/googleapis/google-auth-library-nodejs
https://www.npmjs.com/package/vue-google-oauth2
https://github.com/guruahn/vue-google-oauth2
https://cloud.google.com/docs/authentication/end-user
https://github.com/googleapis/nodejs-bigquery/blob/main/samples/auth-user-sample/authUserFlow.js
https://developers.google.com/drive/api/v3/quickstart/nodejs