chore(migration): Migrate code from googleapis/python-bigquery into packages/google-cloud-bigquery#16008

parthea merged 2097 commits into

maingoogleapis/google-cloud-python:mainfrom

migration.python-bigquery.migration.2026-03-02_16-59-45.migrategoogleapis/google-cloud-python:migration.python-bigquery.migration.2026-03-02_16-59-45.migrateCopy head branch name to clipboard