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.

assets/themes/kanagawa/hyprland.conf

@@ -0,0 +1,12 @@
+$activeBorderColor = rgb(dcd7ba)
+
+general {
+    col.active_border = $activeBorderColor
+}
+
+group {
+    col.border_active = $activeBorderColor
+}
+
+# Kanagawa backdrop is too strong for detault opacity
+windowrule = opacity 0.98 0.95, match:tag terminal