Add qmotion qsync OOK MC example

Add pulse_beep and sdr_mix

Add build check Github Action

Update binaries to be installed list (#6)

Fix pedantic compiler warnings

Fix librt linking

Fix cmake find without PkgConfig

Fix setupStream for SoapySDR 0.8

Fix cmake find module names

Rename cmake modules (2/2)

Rename cmake modules (1/2)

Fix lib link order

Fix tx_sdr to use the first available device

Fix read_text

Add backends