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-webapp

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# Launch the passed in URL as a web app in the default browser (or chromium if the default doesn't support --app).
+
+browser=$(xdg-settings get default-web-browser)
+
+case $browser in
+google-chrome* | brave-browser* | microsoft-edge* | opera* | vivaldi* | helium*) ;;
+*) browser="chromium.desktop" ;;
+esac
+
+exec setsid uwsm-app -- $(sed -n 's/^Exec=\([^ ]*\).*/\1/p' {~/.local,~/.nix-profile,/usr}/share/applications/$browser 2>/dev/null | head -1) --app="$1" "${@:2}"