TSV,CSV parsing with NANs

[lesdiaux]

• Find a working library in Kotlin that can read csv files
• Read the header for column names
• Read all the columns with NANs
• Exclude columns that have non-numeric (non-NAN) values
• Log the parsing procedure:
  - What columns are present
  - What columns were excluded
  - For each numeric column, how many non-NA values are in the column