[RelativePositioning] Add rebalancing worker for issues

Merged Alex Kalderimis requested to merge ajk-relative-positioning-worker into master

What does this MR do?

This adds an automatic rebalancing mechanism for issues, aimed at remediating issues with #239003 (closed)

Addresses #30351


Does this MR meet the acceptance criteria?


Availability and Testing


If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team
Edited by Alex Kalderimis