* Remove :bigquery driver

Add "migration" to convert existing Database instances from :bigquery to :bigquery-cloud-sdk (with error log if using outdated OAuth mechanisms), by way of `normalize-db-details`

Removing references to :bigquery from various places in the code

* Remove from modules/drivers/deps.edn

* Remove stuff from CircleCI that is running the old driver

Remove `driver-switch-test` since there is no practical way to run this anymore (since we can't initialize the old driver)

Remove buggy redef of `isa?` from `semantic-type-migration-tests`

Co-authored-by: Cam Saul <github@camsaul.com>