GTop abstractionLevelName is ignored

[Nemikolh]

Currently, cypher2sql ignore the abstractionLevelName for properties and use the property name provided in the Cypher.

In order to fix that, we can either:

• Add a subquery when fetching values from a table to rename the fields to the cypher ones.
• Do the renaming whenever a property is being accessed on a variable.

The later might be a bit tricky because it can cause subtle valid cypher to fail. (an example might be wrapping a variable in an object and renaming the property). The first one should be relatively straightforward.