Variable shadows a function in python extractor telemetry code

[esteffin]

In the telemetry code for the python extractor (ql/python/extractor/semmle/logging.py) class member names shadow the setter function.

For example in:

class Source(StructuredLogObject):
    def __init__(self, id, name, extractorName="python"):
        self.id = id
        self.name = name
        self.extractorName = extractorName

    def extractorName(self, extractorName):
        self.extractorName = extractorName
        return self

The member self.extractorName shadows function def extractorName.

This happens in classes: Source, Visibility and Location.

I suggest to change the setters to with_ParameterName as happens in the class DiagnosticMessage.