NXCALS-879 Added converter from Spark Row to ImmutableData

Currently CMW provides a Japc -> ImmutableData converter and will also in the future provide the following converters:

RDA3 -> ImmutableData ImmutableData -> Japc ImmutableData -> RDA3

This means that using ImmutableData as a medium to fetch/write data is quite handy for the CERN users as it allows seamless integration with the current transport layers solution.

Here we introduce a converter that can be used by any client to convert the data that was sent using an ImmutableData back to its original state (this is Row -> ImmutableData), providing them with access to the previously mentioned converters.

Edited by Tiago Martins Ribeiro

Merge request reports