Massive configuration overhaul

Currently paying the price of months of non-diligent git usage.

Here's what has changed.

- Theming support in Gvcci and wpgtk
- Dropping support for i3
- Supporting EXWM
- Many Elisp modules
- Collapsed redundant directories in ./configs

configs/desktop/misc/.config/i3/config.device

@@ -1,14 +0,0 @@
-# Desktop-specific configuration
-
-# Since the keyboard for my desktop doesn't support XFree86 keysyms, prefer
-# alternative KBDs.
-
-# volume controls
-bindsym F1 exec --no-startup-id pactl set-sink-mute   @DEFAULT_SINK@ toggle # same Fn keys as laptop
-bindsym F2 exec --no-startup-id pactl set-sink-volume @DEFAULT_SINK@ -10%   # same Fn keys as laptop
-bindsym F3 exec --no-startup-id pactl set-sink-volume @DEFAULT_SINK@ +10%   # same Fn keys as laptop
-
-# playback controls
-bindsym F4 exec --no-startup-id playerctl previous   # same Fn keys as laptop
-bindsym F5 exec --no-startup-id playerctl play-pause # same Fn keys as laptop
-bindsym F6 exec --no-startup-id playerctl next       # same Fn keys as laptop