Make Pro version of the tool to process HERE™ NAVSTREETS™ shapefile data into a network dataset

[mmorang]

Add a tool to process shapefile data from HERE™ NAVSTREETS™ into a file geodatabase network dataset using ArcGIS Pro. Resolves https://github.com/Esri/street-data-processing-tools/issues/47

Additionally, some minor improvements for the Process MultiNet tool:

• Fix small bug in logistics descriptor attribute names (was missing a space)
• Spatially sort streets
• Convert evaluators from VBScript to Python
• Improve progressor messages
• Require a time zone attribute when live traffic will be supported

The update involved substantial refactoring of existing code to allow sharing relevant parts between both tools.