lang/org: add +pretty flag; move org-superstar

org-superstar is no longer enabled by default, due to unicode-related
crashes and general slowness betraying our "gotta go fast" mantra.

modules/lang/org/contrib/pretty.el

@@ -0,0 +1,24 @@
+;;; lang/org/contrib/pretty.el -*- lexical-binding: t; -*-
+
+(after! org
+  (setq org-highlight-latex-and-related '(native script entities)))
+
+
+(use-package! org-superstar ; "prettier" bullets
+  :hook (org-mode . org-superstar-mode)
+  :init
+  :config
+  ;; Make leading stars truly invisible, by rendering them as spaces!
+  (setq org-superstar-leading-bullet ?\s
+        org-superstar-leading-fallback ?\s
+        org-hide-leading-stars nil
+        org-superstar-todo-bullet-alist
+        '(("TODO" . 9744)
+          ("[ ]"  . 9744)
+          ("DONE" . 9745)
+          ("[X]"  . 9745))))
+
+
+(use-package! org-fancy-priorities ; priority icons
+  :hook (org-mode . org-fancy-priorities-mode)
+  :config (setq org-fancy-priorities-list '("⚑" "⬆" "■")))