feat(macos): move files/folders to trash instead of deleting them on macOS

Use the osx-trash package to enable emacs' built-in trash support, which
seems to explicitly lack macOS support.

modules/version-control/siren-magit.el

@@ -51,7 +51,9 @@
     (auto-fill-mode))
 
   :config
-  (require 'magit))
+  (require 'magit)
+  (when (fboundp 'system-move-file-to-trash)
+    (setq magit-delete-by-moving-to-trash t)))
 
 (use-package transient
   :defer t