Function that plots cluster buses in a pandapower net

[Researcher-Retorta]

Hey,

I talked via email with Alexander Scheidler about my contribution regarding cluster visualization in pandapower grids.

The purpose of the update is to illustrate zones within the grid.
The function allows for the representation of these zones' buses in an electrical grid through colorful buses, with each color representing a distinct zone. Essentially, it's a modified version of "vlevel_plotly".

I believe this functionality significantly enhances our ability to visualize and analyze the grid into zones, providing valuable insights into resource aggregation and distribution.

I added an example in tutorials, which encompass 2 .ipynb files, 2 .py files, 1 Excel file and 1 .sqlite file.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 429 lines in your changes are missing coverage. Please review.

Project coverage is 78.24%. Comparing base (27f332a) to head (a6bd20a).

❗ Current head a6bd20a differs from pull request most recent head 89100ad. Consider uploading reports for the commit 89100ad to get more accurate results

Files	Patch %	Lines
pandapower/cluster/draw_cluster.py	0.00%	374 Missing ⚠️
pandapower/cluster/cluster_plotly.py	0.00%	53 Missing ⚠️
pandapower/cluster/__init__.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2229      +/-   ##
===========================================
- Coverage    79.43%   78.24%   -1.20%     
===========================================
  Files          255      258       +3     
  Lines        27954    28381     +427     
===========================================
  Hits         22206    22206              
- Misses        5748     6175     +427     

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[rbolgaryn]

Dear @Researcher-Retorta ,

Thank you for this contribution!

I am a bit confused why there is the file tutorials/traces with functions that create traces when we already have a file that includes functions for creating plotly traces.