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/shared/emacs/.emacs.d/wpc/packages/wpc-elixir.el

@@ -1,15 +0,0 @@
-;;; wpc-elixir.el --- Elixir / Erland configuration -*- lexical-binding: t -*-
-;; Author: William Carroll <wpcarro@gmail.com>
-
-;;; Commentary:
-;; My preferences for working with Elixir / Erlang projects
-
-;;; Code:
-(use-package elixir-mode
-  :config
-  (general-add-hook 'elixir-mode-hook
-                    (lambda ()
-                      (add-hook 'before-save-hook #'elixir-format nil t))))
-
-(provide 'wpc-elixir)
-;;; wpc-elixir.el ends here