refactor: move doom-*-reload-hook to lib/config.el

These hooks are only used by this library, and in interactive sessions,
neither of which make them a good fit for doom.el.

lisp/lib/config.el

@@ -3,6 +3,14 @@
 (defvar doom-bin-dir (expand-file-name "bin/" doom-emacs-dir))
 (defvar doom-bin (expand-file-name "doom" doom-bin-dir))
 
+;;;###autoload
+(defvar doom-after-reload-hook nil
+  "A list of hooks to run after `doom/reload' has reloaded Doom.")
+
+;;;###autoload
+(defvar doom-before-reload-hook nil
+  "A list of hooks to run before `doom/reload' has reloaded Doom.")
+
 ;;;###autoload
 (defvar doom-reloading-p nil
   "TODO")