[Feature]: S3 storage class for backups

### Is there an existing issue already for this feature request/idea?

- [x] I have searched for an existing issue, and could not find anything. I believe this is a new feature request to be evaluated.

### What problem is this feature going to solve? Why should it be added?

Hi. It would be nice to set non-standard storage classes for base backups / WAL when sending objects to S3 so a huge backups is being stored to Glacier immediately to cut the cost.

### Describe the solution you'd like

additional object storage config parameter

### Describe alternatives you've considered

S3 lifecycle, but it works only for data older than 30 days

### Additional context

_No response_

### Backport?

No

### Are you willing to actively contribute to this feature?

No

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct