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/catppuccin-latte/colors.toml

@@ -0,0 +1,23 @@
+accent = "#1e66f5"
+cursor = "#dc8a78"
+foreground = "#4c4f69"
+background = "#eff1f5"
+selection_foreground = "#eff1f5"
+selection_background = "#dc8a78"
+
+color0 = "#bcc0cc"
+color1 = "#d20f39"
+color2 = "#40a02b"
+color3 = "#df8e1d"
+color4 = "#1e66f5"
+color5 = "#ea76cb"
+color6 = "#179299"
+color7 = "#5c5f77"
+color8 = "#acb0be"
+color9 = "#d20f39"
+color10 = "#40a02b"
+color11 = "#df8e1d"
+color12 = "#1e66f5"
+color13 = "#ea76cb"
+color14 = "#179299"
+color15 = "#6c6f85"