feat: Add professional hierarchical documentation

- Created comprehensive README.md with Mermaid diagrams, badges, and TOC
- Added docs/ directory with 7 sections and 14 markdown files
- Included architecture diagrams, flowcharts, and sequence diagrams
- All documentation is fully interlinked with cross-references
- Added ISO storage location on Proxmox development server
- Included troubleshooting guide and evaluation management docs
- All config files (Packer, Terraform, Ansible, Forgejo) documented
- Added icons and visual elements throughout documentation

terraform/outputs.tf

@@ -0,0 +1,4 @@
+output "vm_ip" {
+  description = "IP address of the provisioned VM"
+  value = proxmox_virtual_environment_vm.build_agent.ipv4_addresses[1][0]
+}