enhance: Terraform module for cloud VM provisioning

[williamzujkowski]

Summary

Create Terraform modules to provision moltdown agent VMs on cloud platforms.

Requirements

• AWS EC2 module using custom AMI
• GCP Compute module
• Azure VM module
• Module inputs for customization (size, network, etc.)
• Example configurations

Considerations

• Module registry publishing
• Variable validation
• State management recommendations
• Cost optimization options

From CLAUDE.md Future Improvements section.