Rename velph-supercell to velph-phelel

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 65.85366% with 14 lines in your changes missing coverage. Please review.

Project coverage is 73.48%. Comparing base (6a82b55) to head (41f517f).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/phelel/velph/cli/phelel/__init__.py	76.19%	5 Missing ⚠️
src/phelel/velph/cli/phelel/generate.py	0.00%	5 Missing ⚠️
src/phelel/velph/cli/phelel/phonopy.py	0.00%	3 Missing ⚠️
src/phelel/velph/cli/init/__init__.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #19      +/-   ##
===========================================
- Coverage    73.51%   73.48%   -0.04%     
===========================================
  Files           74       74              
  Lines         5233     5238       +5     
===========================================
+ Hits          3847     3849       +2     
- Misses        1386     1389       +3     

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