Merge duplicate Scone Implementation

[ninamiolane]

This PR follows PR #119 and merge it with duplicate implementation of Scone.

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[codecov]

Codecov Report

Merging #151 (1018c4b) into main (f862ec0) will increase coverage by 0.02%.
Report is 71 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #151      +/-   ##
==========================================
+ Coverage   97.45%   97.47%   +0.02%     
==========================================
  Files          24       26       +2     
  Lines         905      992      +87     
==========================================
+ Hits          882      967      +85     
- Misses         23       25       +2     

Files Changed	Coverage Δ
topomodelx/base/aggregation.py	100.00% <100.00%> (ø)
topomodelx/nn/simplicial/scone_layer.py	100.00% <100.00%> (ø)
topomodelx/nn/simplicial/scone_layer_bis.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes