Unit testing

[Ismoh]

Added luacov and codecov to github workflow action to be able to see the code coverage.
Time to write tests..

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (develop@42a6070). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             develop      #11   +/-   ##
==========================================
  Coverage           ?   31.36%           
==========================================
  Files              ?        2           
  Lines              ?      220           
  Branches           ?        0           
==========================================
  Hits               ?       69           
  Misses             ?      151           
  Partials           ?        0           

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