wip: refactor: Break init.el into modules

Currently, we will just throw everything into modules/ and require it.  As the
Emacs config grows in complexity, we can make the minor improvement to require
everything under glob modules/*.el without explicitly naming each feature.
Further, one could easily imagine a module system with conditionals and flags à
la Doom.

users/crumb/programs/emacs/modules/syd-evil.el

@@ -0,0 +1,9 @@
+;;; syd-evil.el -*- lexical-binding: t; -*-
+
+(use-package evil
+  :init
+  (setq evil-want-minibuffer t)
+  :config
+  (evil-mode 1))
+
+(provide 'syd-evil)

users/crumb/programs/emacs/modules/syd-ui.el

@@ -0,0 +1,7 @@
+;;; syd-ui.el -*- lexical-binding: t; -*-
+
+(use-package which-key
+  :config
+  (which-key-mode 1))
+
+(provide 'syd-ui)