Initial commit: krops-lamassu deployment template

NixOS deployment template for Lamassu Bitcoin ATM server using
nix-bitcoin and krops.

Features:
- Lamassu server with PostgreSQL and auto-generated secrets
- TLS certificates (self-signed)
- Test VM for local development
- Template structure for easy customization

.gitignore

@@ -0,0 +1,21 @@
+# User config files (copy from .example files)
+krops.nix
+config/
+
+# Secrets - do not commit
+secrets/*
+!secrets/.gitkeep
+
+# VM disk images
+*.qcow2
+
+# Nix build results
+result
+result-*
+
+# Editor files
+*.swp
+*.swo
+*~
+.vscode/
+.idea/