[FEATURE] Terraform provider: Add hugepages support #10036

Summary

The Terraform provider for Harvester does not expose hugepages configuration. KubeVirt supports hugepages via domain.memory.hugepages.PageSize for memory-intensive workloads.

Proposed Changes

Add one new field to harvester_virtualmachine:

Valid values: "" (disabled), "2Mi", "1Gi"

This enables users to:

• Allocate huge pages for memory-intensive workloads
• Reduce TLB misses for better memory performance

Use Cases

• Database VMs (PostgreSQL, MySQL) with large working sets
• DPDK-based networking applications
• Scientific computing workloads with large memory footprints

Impact

Terraform provider only, no changes to Harvester core.