Backups garbage collector

[ValDesign22]

Users are able to configure a GC for backups using one of the following conditions:

• Keep last X backups
• Keep backups for X days (or any time measure)

[discord-analytics-huly]

Connected to Huly®: MBM-16

[ValDesign22]

there can be a field in the global settings

[global]
collector = {
  keep = 3, # the number of backups to keep
  for = "7 days" # the duration of how long the backups can be kept
}

the same field can be used in any backup config to allow the user to configure different GC for any of the backups