SOLM12 — SpacePython UI and data backing implementations are coupled together

The user interface (operatorQuery) function is embedded in the middle of the SpacePython implementation and is not able to be separately implemented.

The method of prompting for a value may vary (such as for a web user interface versus a desktop application) and this variance is independence of the implementing provider for the SOLM language module.

Implementing as part of changes to issue #6

Issue #6 includes updates to the SpacePython library to allow for a pluggable interface for different implementations of the language. The plug-in can have different implementations for the UI and data backing.