Integration with Neo4j Point type

[stellasia]

Is your feature request related to a problem? Please describe.
When nodes have a property with type "point", for now we have to use Cypher query to extract lat/lon from it.

Describe the solution you'd like
neomap could read the attributes itself by checking the type of the property (?)

Describe alternatives you've considered

Additional context

[stellasia]

Fixed in #58