Create Job Payload that can be shared amongst Tasks

[KenSuenobu]

Create a Job Payload object that can be shared amongst Tasks. This will eventually be the payload that is serializable (either as the entire payload, or in chunks as Spark handles it.)

This is not distributed, meaning, the data format will not be one that is serializable over a network. At least, not yet. That will be coming in a later release.

[KenSuenobu]

This is really appropriate for job distribution and when the jobs run in a server environment. Tasks can currently share data between each other using a common class object, so this makes the ticket irrelevant for 0.1.0 milestone.

[KenSuenobu]

Sharable object must be a case class or something that can be serde using a library of sorts.

[KenSuenobu]

Good candidate for Arrow?