feat: integrate nix-citizen and star-citizen support in NixOS configuration

hosts/laptop/configuration.nix

@@ -1,29 +1,32 @@
-{ config, ... }:
+{ config, ... }: {
+	imports = [
+	# ─────────────────────────────────────────────────────────────
+	# System configuration
+	# ─────────────────────────────────────────────────────────────
+	../../nixos/audio.nix
+	../../nixos/bluetooth.nix
+	../../nixos/fonts.nix
+	../../nixos/home-manager.nix
+	../../nixos/nix.nix
+	../../nixos/systemd-boot.nix
+	../../nixos/tuigreet.nix
+	../../nixos/users.nix
+	../../nixos/utils.nix
+	../../nixos/hyprland.nix
 
-{
-imports = [
-# System configuration
-../../nixos/audio.nix
-../../nixos/bluetooth.nix
-../../nixos/fonts.nix
-../../nixos/home-manager.nix
-../../nixos/nix.nix
-../../nixos/systemd-boot.nix
-../../nixos/tuigreet.nix
-../../nixos/users.nix
-../../nixos/utils.nix
-../../nixos/hyprland.nix
+	# ─────────────────────────────────────────────────────────────
+	# System integration for Steam
+	# ─────────────────────────────────────────────────────────────
+	../../nixos/steam.nix
 
-../../nixos/steam.nix
+	# You should let those lines as is
+	./hardware-configuration.nix
+	./variables.nix
 
-# Machine-specific files
-./hardware-configuration.nix
-./variables.nix
+	];
 
-];
-
-home-manager.users."${config.var.username}" = import ./home.nix;
-services.flatpak.enable = true;
-
-system.stateVersion = "24.05";
+	home-manager.users."${config.var.username}" = import ./home.nix;
+	services.flatpak.enable = true;
+	# Don't touch this
+	system.stateVersion = "24.05";
 }