Factor for re-use

[jordens]

There are a couple of components that we duplicate (i.e. copy) across devices (stabilizer, thermostat-eem, booster, thermostat-mqtt). That makes maintenance harder. Let's evaluate factoring them out into their own crate(s) or upstreaming them somewhere

• [ ] https://github.com/quartiq/stabilizer/blob/main/src/settings.rs -> crate
• [ ] https://github.com/quartiq/stabilizer/blob/main/src/hardware/delay.rs -> ?
• [ ] https://github.com/quartiq/stabilizer/blob/main/src/hardware/eeprom.rs -> new/existing crate?
• [ ] #945
• [ ] https://github.com/quartiq/stabilizer/blob/main/src/hardware/signal_generator.rs -> idsp/own crate
• [ ] https://github.com/quartiq/stabilizer/blob/main/src/hardware/setup.rs
  • [ ] ITCM setup -> hal
  • [ ] DFU boot -> hal
  • [ ] best effort rtt -> crate, also since rtt-target broke API (#835 etc)
• [ ] https://github.com/quartiq/stabilizer/blob/main/src/net/data_stream.rs -> crate
• [ ] https://github.com/quartiq/stabilizer/blob/main/src/net/telemetry.rs -> crate