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-test-installer

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+# Build and run the Nnomarchy Installer VM for testing.
+
+echo "Building Nnomarchy Installer VM..."
+nix build .#nixosConfigurations.installerVm.config.system.build.vm
+
+if [ $? -eq 0 ]; then
+    echo "Success! Launching Installer VM..."
+    ./result/bin/run-nnomarchy-installer-vm
+else
+    echo "Error: VM build failed."
+    exit 1
+fi