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.

bin/utils/nomarchy-build-iso

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Build the Nnomarchy Installer ISO declaratively using the flake.
+
+echo "Building Nnomarchy Installer ISO..."
+
+# The output will be a symlink named 'result' in the current directory
+nix build .#nixosConfigurations.installerIso.config.system.build.isoImage
+
+if [ $? -eq 0 ]; then
+    ISO_PATH=$(readlink -f result/iso/*.iso)
+    echo "Success! ISO built at: $ISO_PATH"
+    echo "You can now burn this to a USB drive using 'dd' or 'etcher'."
+else
+    echo "Error: ISO build failed."
+    exit 1
+fi