feat: setup logs retention by max file size

internal/domain/audit/auditRepositoryInterface.go

@@ -7,10 +7,12 @@ type Repository interface {
 	List(filter Filter) (Page, error)
 	Summary(query SummaryQuery) (Summary, error)
 	DeleteOlderThan(cutoff time.Time) (int, error)
+	DeleteOldest(limit int, before time.Time) (int, error)
+	SizeBytes() (int64, error)
 }
 
 type SettingsRepository interface {
 	Get() (Settings, error)
-	SaveRetention(days int) error
+	SaveRetention(days int, maxGB int) error
 	SaveLastCleanup(at time.Time, removed int) error
 }