Refactor DOOM init & add new init hooks

+ Add doom-init-hook and doom-post-init-hook to simplify Emacs init
  hooks into less ambiguous ones.
+ Attach former after-init-hook and emacs-startup-hook hooks to new doom
  init hooks.
+ Vastly improves daemon and tty support: preventing incorrect colors
  from bleeding across face class barriers, and into GUI Emacs and vice
  versa, when spawned with emacsclient.
+ Fix persp-mode breaking Emacs daemon, and ensuring that initialization
  is done properly in terminal Emacs (and emacsclient frames).

core/core-projects.el

@@ -21,7 +21,7 @@ state are passed in.")
           "build.gradle"))
 
   :config
-  (add-hook 'after-init-hook #'projectile-mode)
+  (add-hook 'doom-init-hook #'projectile-mode)
 
   (setq projectile-other-file-alist
         (append '(("less" "css")