#18 import of drum soundfont banks

[piotr]

It would be very handy to be able to import sf2 drums banks directly into hydrogen, when you have multi-layered drums. Otherwise it is tedious to export drum audio files from soundfont file using for example swami and then import every sound and every layer into hydrogen.

There are plenty of free sf2 drums sounds in the internet, so it is a waste not to use them in hydrogen.