Adding algorightms to Gallery

[maximelucas]

Added four algorithms to the Gallery: communities, largest component, node centrality and edge centrality.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.65%. Comparing base (820b770) to head (4a727d8).
⚠️ Report is 20 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #714      +/-   ##
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- Coverage   93.79%   93.65%   -0.15%     
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  Files          66       66              
  Lines        5142     5170      +28     
==========================================
+ Hits         4823     4842      +19     
- Misses        319      328       +9     

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[leotrs]

Nice additions Max! All four examples run cleanly and the typo fixes are welcome.

One small suggestion: the three examples using random_hypergraph trigger a "much slower than fast_random_hypergraph" warning when run. Worth swapping to fast_random_hypergraph in plot_clique_centrality.py, plot_largest_component.py, and plot_node_edge_centrality.py so the gallery output stays clean. Up to you whether to do it here or in a follow-up.