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/rose-pine/colors.toml

@@ -0,0 +1,23 @@
+accent = "#56949f"
+cursor = "#cecacd"
+foreground = "#575279"
+background = "#faf4ed"
+selection_foreground = "#575279"
+selection_background = "#dfdad9"
+
+color0 = "#f2e9e1"
+color1 = "#b4637a"
+color2 = "#286983"
+color3 = "#ea9d34"
+color4 = "#56949f"
+color5 = "#907aa9"
+color6 = "#d7827e"
+color7 = "#575279"
+color8 = "#9893a5"
+color9 = "#b4637a"
+color10 = "#286983"
+color11 = "#ea9d34"
+color12 = "#56949f"
+color13 = "#907aa9"
+color14 = "#d7827e"
+color15 = "#575279"