chore(startup): Make various modules more lazy-loaded

This should improve startup speed a little bit.

modules/editor/siren-folding.el

@@ -8,7 +8,6 @@
 
 (use-package hideshow
   :straight (:type built-in)
-  :demand
 
   :bind
   ("C-=" . siren-folding-toggle-selective-display)
@@ -19,8 +18,7 @@
     "Activate or deactivate code folding.
 Optional ARG is passed directly to mode toggle function."
     (hs-minor-mode (or arg t))
-    (hideshowvis-minor-mode (or arg t)))
-
+    (if window-system (hideshowvis-minor-mode (or arg t))))
 
   (defun siren-folding-toggle (column)
     "Toggle hiding/showing blocks via hs-mode.
@@ -43,8 +41,7 @@ Borrowed from: http://www.emacswiki.org/emacs/HideShow"
            (1+ (current-column)))))))
 
 (use-package hideshowvis
-  :demand
-  :after hideshow)
+  :defer t)
 
 (provide 'siren-folding)
 ;;; siren-folding.el ends here