T168 phpunit

[niden]

Hello!

• Type: new feature
• Link to issue: [NFR] Change testing suite to phpunit #168

In raising this pull request, I confirm the following (please check boxes):

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR

Changed the testing suite to phpunit and other enhancements

Thanks

[codecov]

Codecov Report

❌ Patch coverage is 48.80952% with 129 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.57%. Comparing base (7edfba7) to head (e0c6d03).
⚠️ Report is 29 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #172      +/-   ##
============================================
+ Coverage     68.04%   75.57%   +7.53%     
============================================
  Files            24       34      +10     
  Lines          2081     2641     +560     
============================================
+ Hits           1416     1996     +580     
+ Misses          665      645      -20     

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.