adds mennos-laptop as host, adds nextcloud, adds nil and nixd for zed

language servers to work. updates setup to support 25.04

config/home-manager/packages/common/hosts/mennos-laptop.nix

@@ -0,0 +1,4 @@
+{ pkgs-unstable, ... }:
+{
+  home.packages = with pkgs-unstable; [ ];
+}