migration to googleapis org

[tswast]

I recently migrated https://github.com/googleapis/python-bigquery-sqlalchemy to the googleapis org, where I'm able to benefit from release tooling and issue triage.

Since I'm the primary maintainer here, it might make sense to do the same for pandas-gbq if there are no objections from the community.

Edit Now that the repository has been migrated, I'll keep this issue open to track all the changes needed:

• Add repo metadata (chore: add repository metadata #370)
• Integrate with release-please
  • Remove versioneer (refactor: configure setup.py in preparation for using release-please #371)
  • Migrate changelog to CHANGELOG.md (docs: add markdown version of changelog #372)
  • Grant PyPI permissions to release bot
• Use shared templates (owlbot / synthtool) for continuous integration and testing
  • Enable owlbot and Kokoro chore: enable owlbot and Kokoro #380
  • Disable CircleCI -- Add conda session to noxfile and Kokoro jobs feat: migrating off of CircleCI #638
• Update docs to reflect new package location.
  • Publish docs to https://googleapis.dev/python/pandas-gbq/latest
  • Update README to point to new docs location
  • Update contributing docs to reflect use of conventional commits messages https://github.com/googleapis/python-bigquery-pandas/pull/504/files
• Add ROADMAP.md indicating the purpose of this package in relation to google-cloud-bigquery and pandas document pandas-gbq vision and roadmap #149

[max-sixty]

Sounds good! Hope all's well @tswast !