feat: add autoscaler service integration support

[rriski]

• Adds autoscaler service integration and service integration endpoint support

[rriski]

tests

[byashimov]

Hey. Looks good to me, few things I would do:

1. put some validation into service update part, here generic_service_handler.go:

diskSpace := v1alpha1.ConvertDiskSpace(o.getDiskSpace())
if diskSpace > 0 {
	for _, v := range oldService.ServiceIntegrations {
		if v.IntegrationType == service.IntegrationTypeAutoscaler {
			return fmt.Errorf("cannot set disk space for service with autoscaler integration enabled")
		}
	}
}

2. Add a warning here on the disk space field description common.go, something like "should not be set while the autoscaler service integration is running"

Additionally we could have webhook validation, but the setup manager does not passthrough the go client. So let's not do that.

[byashimov]

Please add disk_space vs autoscaler validation 🙏

Changes addressed