feat(auth): samples for auth

[FrodoTheTrue]

[snippet-bot[bot]]

Here is the summary of changes.

You are about to add 6 region tags.

• auth/authenticateExplicit.js:19, tag auth_cloud_explicit_adc
• auth/authenticateImplicitWithAdc.js:21, tag auth_cloud_implicit_adc
• auth/idTokenFromImpersonatedCredentials.js:29, tag auth_cloud_idtoken_impersonated_credentials
• auth/idTokenFromMetadataServer.js:22, tag auth_cloud_idtoken_metadata_server
• auth/idTokenFromServiceAccount.js:23, tag auth_cloud_idtoken_service_account
• auth/verifyGoogleIdToken.js:27, tag auth_cloud_verify_google_idtoken

---

This comment is generated by snippet-bot. If you find problems with this result, please file an issue at: https://github.com/googleapis/repo-automation-bots/issues. To update this comment, add snippet-bot:force-run label or use the checkbox below:

• [ ] Refresh this comment

[grayside]

Is this PR migrating samples from https://github.com/googleapis/google-auth-library-nodejs/tree/main/samples? If so could we follow the revised process to keep the Git commit history?

[rsamborski]

@Shnatsel Can you PTAL and get this merged? @Sita04 can provide more context

[Shnatsel]

The samples have instead been added to the client library repository. Since the client library is not automatically generated, there are currently no plans to move the samples to nodejs-docs-samples. Closing.