chore(setup): update .zshenv with script directory path

setup

@@ -20,6 +20,9 @@ echo "[+] Creating symlinks..."
 
 if [ ! -f "$PWD/.zshenv" ]; then
     cp "$PWD/.zshenv.template" "$PWD/.zshenv"
+
+    SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    sed -i "s|^export DOTFILES_INSTALL_DIR=.*|export DOTFILES_INSTALL_DIR=${SCRIPT_DIR}|" .zshenv
 fi
 
 stow .