infra - nix configuration for my machines

	Commit message (Expand)	Author	Files	Lines
2025-07-21	move machines definitions to top-level	Franck Cuny	2	-126/+0
2025-07-21	move nix configuration to its own profile	Franck Cuny	2	-70/+2
2025-07-21	easier to read import paths	Franck Cuny	2	-4/+4
2025-07-21	refactoring to use flake-parts and automatic imports of hosts	Franck Cuny	2	-0/+194