NOMRG ENH: add pyproject.toml to fix wheel building and install from github

[mathurinm]

fixes #122

[codecov-commenter]

Codecov Report

Merging #218 (b3da5b2) into main (f7fa260) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #218   +/-   ##
=======================================
  Coverage   85.79%   85.79%           
=======================================
  Files          14       14           
  Lines         929      929           
  Branches      128      128           
=======================================
  Hits          797      797           
  Misses        101      101           
  Partials       31       31           

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unittests	∅ <ø> (∅)

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[mathurinm]

In a fresh python 3.8 env pip install git+https://github.com/mathurinm/celer.git@main works but pip install git+https://github.com/mathurinm/celer.git@test_pyproject does not

[Badr-MOUFAD]

Closing as it is no longer a problem.

P.S Switch to pyproject.toml was made in #284