Refactor the TestSuiteParser.java class

[dakaa16]

Currently the TestSuiteParser has too much responsibility. This results in the class being a cluttered mess.
The class should have the single responsibility: 'Parse testsuites'. It should not directly create mocks or generate code - a level of abstraction should exist for this.
A way to do this would be something akin to:

• A class for holding the testsuite state
• A reader-class that returns tokens and updates the testsuite state
• Keyword actions are triggered by specific states
• Keyword actions could be of type Consumer<T>, to minimize duplication of code
• Keyword actions should actually be utilized
• A class or maybe multiple classes should generate cobol code
• All of the above is used by TestSuiteParser.getParsedTestSuiteLines, that ties everything together with a simple loop and a switch statement, that triggers keyword actions (with an argument), based on the current state

The above list is a step towards having the TestSuiteParser have a single responsibility. Further steps is required. View the list as a way to get started.