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/flexoki-light/colors.toml

@@ -0,0 +1,23 @@
+accent = "#205EA6"
+cursor = "#100F0F"
+foreground = "#100F0F"
+background = "#FFFCF0"
+selection_foreground = "#100F0F"
+selection_background = "#CECDC3"
+
+color0 = "#100F0F"
+color1 = "#D14D41"
+color2 = "#879A39"
+color3 = "#D0A215"
+color4 = "#205EA6"
+color5 = "#CE5D97"
+color6 = "#3AA99F"
+color7 = "#FFFCF0"
+color8 = "#100F0F"
+color9 = "#D14D41"
+color10 = "#879A39"
+color11 = "#D0A215"
+color12 = "#4385BE"
+color13 = "#CE5D97"
+color14 = "#3AA99F"
+color15 = "#FFFCF0"