[PSA] Pulse oximetry data can simply be fed over serial protocol by setting related vars (#SAO, #HRT)

[m-kozlowski]

...without the need of propertiary Oximeter Adapter.
This opens the door to supporting virtually any pulse oximeter capable of reporting its readings, so that everything ends up in the EDF files generated by AirSense.

[m-kozlowski]

( ͡° ͜ʖ ͡°)つ──☆*:・ﾟ

[m-kozlowski]

https://github.com/m-kozlowski/airbridge
There are still a few rough edges - some bigger ones (no authentication in the telnet interface) and smaller ones (no integration with the device menu) - but it works quite well. EDF data is populated correctly. And there are a few other nice things that can be done with it
Tested with the Nonin 3150 BLE. Should also work with the O2Ring and generic PLX pulse oximeters.