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/apps/nomarchy-launch-walker

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Launch the Walker application launcher while ensuring that it's data provider (called elephant) is running first.
+
+# Ensure elephant is running before launching walker
+if ! pgrep -x elephant > /dev/null; then
+  setsid uwsm-app -- elephant &
+fi
+
+# Ensure walker service is running
+if ! pgrep -f "walker --gapplication-service" > /dev/null; then
+  setsid uwsm-app -- walker --gapplication-service &
+fi
+
+exec walker --width 644 --maxheight 300 --minheight 300 "$@"