Proposal: Integrate Pylint #34

[mdwRepository]

This pull request introduces Pylint as proposed in #34. The following changes are included:

• added pylint requirements
• created an initial .pylintrc file to configure linting rules as needed, e.g., ignoring files, folders, or specific rules.
• refactored scripts console.py, example.py, example_gets.py, setup.py, and solr_example.py to comply with Pylint standards except for module docstrings.
• refactored code in models.py to remove unnecessary use of arguments when calling super for the parent class, removed commas after values to avoid turning it into a tuple, and used literals instead of calling list/set/dict
• refactored code in client.py to import models explicitly instead of a wildcard, used lazy % formatting in logging functions, and fixed some C0301: Line too long issues

Other pylint issues were intentionally omitted as they may require further discussion with the project team.

[pnbecker]

I‘m very happy to see this pull-request. Thank you for sorting out the technical issues to create it!

[kshepherd]

+1 thanks @mdwRepository - I will add some usage notes in teh next readme, too