feat: add root configuration files for mono-repo setup

Add environment template, git ignore rules, and Go workspace
configuration to support mono-repo development workflow.

- .env.example: Environment variables template for all services
- .gitignore: Git ignore rules for Go, Docker, Terraform, Ansible
- go.work: Go workspace file for multi-module support

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

go.work

@@ -0,0 +1,15 @@
+# YDN - YourDreamNameHere.com
+# Go Workspace Configuration
+
+go 1.21
+
+# Service modules
+./services/api
+./services/worker
+./services/middleware
+
+# Shared packages
+./pkg
+
+# Backend integration (if needed)
+./backend/dolibarr