Update hw_settings.py to add airspy hf+ support
Update hw_settings.py to add airspy hf+ support, either for people who have the right gr-osmosdr compiled or for when we switch to SoapySDR
P.S. most decoders in dev work out the box if you "just" compile the right gr-osmosdr, only satnogs_fm_demod.py needs a minor change to support var. sample rates (which was already done for most other decoders) see https://gitlab.com/librespacefoundation/satnogs/gr-satnogs/raw/de3c154fd4bf47cdcca501da1295ba40f22bb19b/apps/flowgraphs/satnogs_fm_demod.py
I'm current running this setup for several days now without issue