Sensor data reader

Reads sensor data provided in csv files.

Running instructions

sbt "run /path/to/csv/directory"

Testing

sbt test

More elaborate task solution description

The solution uses fs2 to read the files. Reads are done in chunks of 4 mb. I think that the SensorDataCollector could be further improved with:

• better error handling. Currently, the error where a file is missing columns (eg. in the middle) will not be caught. I would need some more time to figure it out right. For now, it is assumed that the csv files are correct.
• probably the performance of reading the files could be tweaked even more (bigger chunks, aggregating partial results using chunkN on Row instances and then process partially aggregated results rather than single rows).

Ideas

To be considered if newtype macros should be used to further reduce the runtime overhead (how big gain would that be? Is it worth it? To be checked)