Update build system with flit and Makefile

[mawassk]

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@0e5b44f). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #3   +/-   ##
=======================================
  Coverage        ?   93.71%           
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  Files           ?        7           
  Lines           ?      175           
  Branches        ?        0           
=======================================
  Hits            ?      164           
  Misses          ?       11           
  Partials        ?        0           

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