Support for Bigquery external connection to Biglake tables

[600lyy]

Checklist

• I did not find a related open enhancement request.
• I understand that enhancement requests filed in the GitHub repository are by default low priority.
• If this request is time-sensitive, I have submitted a corresponding issue with GCP support.

Describe the feature or resource

Add support for Bigquery connection that can be used to create external tables (including biglake) through KCC Bigquery

This resource is already existing in KCC's terraform subrepo thus there is no need to update terraform in KCC

Additional information

example that uses terraform: https://cloud.google.com/bigquery/docs/create-cloud-storage-table-biglake#create-table-storage

Importance

No response

[600lyy]

I am working on it

[600lyy]

PR: #1682

[600lyy]

opened a new PR: #1981