Add infra.autoscaling_group resource type — blocker for workflow#653 Phase 1

[intel352]

Blocker for workflow#653 Phase 1 — force-cutover of module/platform_autoscaling.go (485 LOC) from workflow core to this plugin.

Current state

Plugin v0.1.0 exposes 13 infra.* capabilities (container_service, k8s_cluster, database, cache, vpc, load_balancer, dns, registry, api_gateway, firewall, iam_role, storage, certificate). No autoscaling_group driver exists.

Core's module/platform_autoscaling.go wraps applicationautoscaling.Client for ECS service / DynamoDB / RDS / EBS scaling targets and policies. Source: https://github.com/GoCodeAlone/workflow/blob/main/module/platform_autoscaling.go

Ask

Add an infra.autoscaling_group driver (or equivalent — name negotiable) covering at minimum:

• Register scalable target (RegisterScalableTarget)
• Put scaling policy (PutScalingPolicy)
• Describe scaling activities (DescribeScalingActivities)
• Delete scalable target on destroy

Once present, workflow#653 Phase 1 can force-cutover the 8 in-scope files (~3150 LOC) following the #617 pattern.

Pattern

Mirror existing drivers/eks.go / drivers/rds.go / drivers/alb.go shape. Plugin manifest capabilities list adds "infra.autoscaling_group".

Filed as part of post-#617 autonomous AWS audit. 🤖