Core Module Enhancements

[dixonwhitmire]

The core service currently performs the following tasks:

• classifies incoming data, raises an error if data cannot be classified.
• validates incoming data, raises an error if data is invalid.
• creates a simple "envelope", or publish data model, for processing results, prior to publishing to NATS.

In this epic we will update the core module to:

• be lenient in regards to classification and validation by allowing configurations to prefer warnings rather than errors
• include additional metadata fields for errors, warnings, provenance, etc
• have well defined "status" values in the model