[emacs] Add scad-mode

.doom.d/config.org

@@ -1082,6 +1082,14 @@ Adds shortcuts to edit the structure of lisp code.
   (use-package! paredit
     :hook ((emacs-lisp-mode . enable-paredit-mode)))
 #+end_src
+** OpenSCAD
+Mode for editing OpenSCAD 3D modeling files. Files can be opened externally for
+live-updated previews within OpenSCAD itself using =C-c C-o=.
+
+#+begin_src emacs-lisp
+  (use-package! scad-mode
+    :mode "\\.scad\\'")
+#+end_src
 * Applications
 ** Email
 Configure MU4E to read email synced from my personal and work accounts.

.doom.d/packages.el

@@ -23,6 +23,7 @@
 (package! mixed-pitch)
 (package! nov)
 (package! ob-http)
+(package! scad-mode)
 (package! org-msg)
 (package! org-ref)
 (package! org-roam-bibtex :recipe (:host github :repo "org-roam/org-roam-bibtex"))