Bulk-enable code scanning for multiple repositories (GHEC)

[github-product-roadmap]

Summary

Currently, code scanning can be enabled and configured easily for a single repository at a time. We're going to provide a solution for teams to easily and efficiently set up code scanning on multiple repositories at the same time.

Intended Outcome

Enabling and configuring code scanning on multiple repositories will make it easier to quickly roll out code scanning across an entire business.