Proxmox VE Virtual Machine Template for Coder Workspaces

[Pranjal6955]

Closes #212

Description

Adds a new Proxmox VE virtual machine template for Coder workspaces. This template provides a comprehensive solution for provisioning development environments on Proxmox VE infrastructure, supporting both QEMU/KVM virtualization with cloud-init automation.

The template includes:

• Configurable VM resources (CPU, memory, disk)
• Cloud-init based automated setup
• Network configuration with bridge support
• Template-based VM provisioning for fast deployment
• Full Coder agent integration with VS Code and JetBrains IDEs
• Proper authentication using Proxmox API tokens
• Resource monitoring and metadata display

Module Information

Path: registry/coder/templates/proxmox-vm
New version: v1.0.0
Breaking change: [ ] Yes [x] No

Testing & Validation

• Tests pass (bun test)
• Code formatted (bun run fmt)
• Changes tested locally
• Template follows Proxmox provider documentation
• Authentication methods properly configured
• Cloud-init integration tested
• VM lifecycle management verified

Related Issues

/claim #212