Service: Migration from v2
Outsource the migration API from the core into its own service.
This should purge more normally not used code from the core to make it smaller.
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
Outsource the migration API from the core into its own service.
This should purge more normally not used code from the core to make it smaller.