Investigate if we can use Housekeeping to automate the migration squashing process
### Context
Investigate if we can use [housekeeping](https://docs.gitlab.com/ee/administration/housekeeping.html) to automate the migration squashing process.
### Desired outcome
- [ ] Create a follow-up issue with:
- - [ ] Document the pros and cons of using housekeeping to manage our migration squashing process;
- - [ ] Document the amount of work to be done, if form of steps:
- - - MR 1 - Adding a new queue;
- - - MR 2 - Creating the worker class;
- - - MR 3 - Other stuff;
issue