Ensure empatica stream is not breaking messages into half-lines

[glopesdev]

The current implementation seems to assume that available bytes in the TCP buffer always represent whole messages (i.e. ending with a newline) but this cannot be guaranteed in general.

pluma-experiments/Workflows/Extensions/EmpaticaClient.cs

Line 59 in 6271b02

while ((line = reader.ReadLine()) != null)

The easiest way to fix this is simply to create a StreamReader directly on top of the TCP stream and just ReadLine in the task loop. Internally the reader will take care of managing all the stream state automatically.