[novafinedust] Optimizations on access to the serial port (#10005)

[novafinedust] Optimizations on access to the serial port (#10005)

* [novafinedust] Test for optimizations on access to the serial port

- retry logic if port does not yet exist on startup
- do not write sleep command on shutdown if port has issues
- no not register data listener on port but wait for data instead to be
  compatible with RFC2217 serial over network implementation
- ignore all buffered data from device during initialization to get the
  device into a defined state

* Adress review comments

- moved most "normal" logging to TRACE level
- used lambda function

* Improve error messages as requested in the review

Signed-off-by: Stefan Triller <github@stefantriller.de>