feat: setup logs retention by max file size

internal/infrastructure/persistence/models/auditSettingsModel.go

@@ -5,6 +5,7 @@ import "time"
 type AuditSettings struct {
 	ID                 uint32 `gorm:"primaryKey"`
 	RetentionDays      int    `gorm:"not null"`
+	RetentionMaxGB     int    `gorm:"not null;default:0"`
 	LastCleanupAt      *time.Time
 	LastCleanupRemoved int `gorm:"not null"`
 }