Update AUR packages after system pkgs + migrate

As AUR packages need local compiling and that might fail. Which
shouldn't prevent migrations from running.

bin/omarchy-update-aur-pkgs

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e
+
+# Update AUR packages if any are installed
+if pacman -Qem >/dev/null; then
+  if omarchy-pkg-aur-accessible; then
+    echo -e "\e[32m\nUpdate AUR packages\e[0m"
+    yay -Sua --noconfirm --ignore gcc14,gcc14-libs
+    echo
+  else
+    echo -e "\e[31m\nAUR is unavailable (so skipping updates)\e[0m"
+    echo
+  fi
+fi
+
+orphans=$(pacman -Qtdq || true)
+if [[ -n $orphans ]]; then
+  echo -e "\e[32m\nRemove orphan system packages\e[0m"
+  for pkg in $orphans; do
+    sudo pacman -Rs --noconfirm "$pkg" || true
+  done
+  echo
+fi