Refactor black

[RiesBen]

This PR is reafactoring the whole Repo with Black, improving the code readability.

Depends on #58 , as has the same origin.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.13605% with 29 lines in your changes missing coverage. Please review.

Project coverage is 90.90%. Comparing base (193a55d) to head (af0a844). Report is 1 commits behind head on build_v1.

Files	Patch %	Lines
...work_planners/concatenators/cyclic_concatenator.py	0.00%	5 Missing :warning:
src/konnektor/visualization/widget.py	77.27%	5 Missing :warning:
src/konnektor/network_analysis/network_analysis.py	80.95%	4 Missing :warning:
...planners/generators/clustered_network_generator.py	82.35%	3 Missing :warning:
...tworkx_implementations/radial_network_algorithm.py	80.00%	2 Missing :warning:
...k_planners/generators/_parallel_mapping_pattern.py	66.66%	2 Missing :warning:
...erators/minimal_spanning_tree_network_generator.py	75.00%	2 Missing :warning:
...dundant_minimal_spanning_tree_network_generator.py	80.00%	2 Missing :warning:
src/konnektor/data/__init__.py	85.71%	1 Missing :warning:
...tworkx_implementations/cyclic_network_algorithm.py	97.50%	1 Missing :warning:
... and 2 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## build_v1 #62 +/- ## ============================================ - Coverage 91.10% 90.90% -0.21% ============================================ Files 46 46 Lines 1293 1308 +15 ============================================ + Hits 1178 1189 +11 - Misses 115 119 +4 ```

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[IAlibay]

@RiesBen the correct approach is to squash merge when applying black to a codebase, that way you don't overwrite your entire history - is this what you did here and/or can you isolate the commit where you applied black so we can put it in the git ignore list?