feat(system): comprehensive branding, styling, and system feature update

- Relocate themes to assets/themes/ and update all references.
- Implement custom SDDM theme and Plymouth theme enhancements.
- Add themed templates for Alacritty, Hyprland, Waybar, and other apps.
- Introduce Makima key remapper module and configuration.
- Add Voxtype and Walker configurations.
- Implement systemd power management and timeout optimizations.
- Add Nautilus-python extensions for LocalSend.
- Update branding assets and ASCII art integration.

modules/system/default.nix

@@ -4,6 +4,7 @@
   imports = [
     ./options.nix
     ./state.nix
+    ./systemd.nix
     ./plymouth.nix
     ./sddm.nix
     ./hardware.nix
@@ -12,6 +13,7 @@
     ./network.nix
     ./browser.nix
     ./impermanence.nix
+    ./makima.nix
   ];
 
   time.timeZone = config.nomarchy.system.timezone;