feat: default retention period set to 7 days for rudder backups

[Sidddddarth]

Description

in case of default backup retention period(7 days for now) to rudder-storage, jobs must be uploaded to bucket/7dayretention prefix(configurable via env - JOBS_BACKUP_STORAGE_DEFAULT_PREFIX).

Notion Ticket

Implement 7-day data retention policy

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.22 🎉

Comparison is base (61d9275) 53.55% compared to head (56e3579) 53.77%.

❗ Current head 56e3579 differs from pull request most recent head 59f83c9. Consider uploading reports for the commit 59f83c9 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3038      +/-   ##
==========================================
+ Coverage   53.55%   53.77%   +0.22%     
==========================================
  Files         350      348       -2     
  Lines       54440    53866     -574     
==========================================
- Hits        29156    28969     -187     
+ Misses      23628    23260     -368     
+ Partials     1656     1637      -19     

Impacted Files	Coverage Δ
config/backend-config/types.go	74.07% <ø> (ø)
services/fileuploader/fileuploader.go	100.00% <100.00%> (+2.94%)	⬆️

... and 34 files with indirect coverage changes

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.