How to add all files in a folder, including sub-folders and files in those folders...

I need to distribute a 3rd-party component that our software uses, and it has a complex systems of files and folders. It has folders within folders and a whole bunch of files within each folder. Is there an easy way/best practice way of adding a bunch of files and folders?

Adding individual files and folders is tedious and not feasible. If the component ever upgrades their folder structure, or add/removes files etc, it will mean manually updating the installer each time (and checking each update for the differences).

Is there a good way to achieve this? Thanks,
Rod