Build a first release of ferrite

[vielmetti]

"Ferrite" is the working name for an amateur radio focus containerized
desktop. It is to be based on Universal Blue (https://ublue.it/) and is
inspired by Ham-Pi, PiSDR, and other related projects that try to
corral a whole bunch of ham radio software into a single distribution.

Target hardware includes the RTL-SDR and Airspy HF+ software defined
radios. I hope to be able to tune and process and decode ADS-B, APRS,
AM, FM (narrowband, wideband, and stereo), SSB, a variety of digital
voice modes including DMR, and to decode slow scan TV and radiograms.
I'll do the receive side first, and then look at transmitters.

Universal Blue targets a wide range of hardware, so I'll let that project
shape my selection of what machine this runs on. The Raspberry Pi would
be great to get everything running on, but I'll also hope to get a Chromebook
ready setup to better support mobile and portable operations.