Add support for Generics

[StephanPirnbaum]

Feature Description

Generics are an important part of the development in Java and is of the same importance during analysis with jQAssistant, e.g. only when knowing to what type a Collection is typed, an analysis brings senseful results.

For that, the jQAssistant Java scanner needs to be extended to support generics.

Since the resulting graph model is not trivial, I attached the discussed proposal as:

• graph model as png (graphml is in the zip)
• a file with examples which should cover all relevant use cases of generics usages (deeper nested generics would also work)

example.txt
Generics.zip

[StephanPirnbaum]

The relationship :HAS_BOUND should be named :HAS_UPPER_BOUND for type variables to be consistent with the data model