demonstration notebook for point cloud

[Slautin]

• minor change in like_array

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 75.61%. Comparing base (95a711c) to head (3cfa33e).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
sidpy/sid/dataset.py	57.14%	3 Missing ⚠️
sidpy/viz/dataset_viz.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #221      +/-   ##
==========================================
- Coverage   75.62%   75.61%   -0.02%     
==========================================
  Files          46       46              
  Lines       10077    10083       +6     
==========================================
+ Hits         7621     7624       +3     
- Misses       2456     2459       +3     

Flag	Coverage Δ
unittests	75.61% <50.00%> (-0.02%)	⬇️

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