Support for data source of google_bigquery_connection

Currently in the process of building an access management app
The team currently wants a simple way to give access to the bigquery connection’s service account to the buckets

While doing this I was scrolling finding a data block which would take the connection name to fetch the service account ID attached to it, but apparently, this block doesn’t exist

Is there any plans to add this block in the future, if yes do we have any ETA
And until then is there any other way I can try to fetch this detail?

Note: The bigquery_connection is not created in the same tf init so I can’t reference it that way