💥 Rethink core hook order & naming

- doom-post-init-hook was renamed doom-init-modules-hook
- doom-init-hook was renamed doom-before-init-modules-hook
- doom-init-modules-hook now runs before the user's config.el is run
- Moved doom-init-ui-hook to run later (on window-setup-hook rather than
  emacs-startup-hook).

Yield a modest improvement in startup times.

modules/ui/unicode/autoload.el

@@ -1,7 +1,7 @@
 ;;; ui/unicode/autoload.el -*- lexical-binding: t; -*-
 
 ;;;###autoload
-(add-hook 'doom-post-init-hook #'+unicode|init-fonts)
+(add-hook 'doom-init-ui-hook #'+unicode|init-fonts)
 
 ;;;###autoload
 (defun +unicode|init-fonts ()