Moved modules into a new Modules subdirectory. Started config of install.sh script. Moved home manager config out of flake.

hosts/default/default.nix

@@ -0,0 +1,19 @@
+{ pkgs, ... }:
+{
+  imports = [
+    ./hardware.nix
+    ./host-packages.nix
+  ];
+
+  # Enable sddm display manager
+  services.displayManager.sddm.enable = true;
+
+  # Sysc-greet display manager
+  services.sysc-greet.enable = false;
+
+  # Keep niri available at system level for ly display manager to detect it
+  programs.niri.package = pkgs.niri;
+
+  # Ensure niri session is available to display manager
+  services.displayManager.sessionPackages = [ pkgs.niri ];
+}