IT Tests with Codecov

[JavierMonton]

This PR aims to add Codecov to IT Tests.
Because IT Tests are only executed on main branch (not PRs), carryforward has been added as true

[codecov]

Codecov Report

Merging #153 (fd74a3a) into main (18aa064) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #153   +/-   ##
=======================================
  Coverage   79.12%   79.12%           
=======================================
  Files          23       23           
  Lines         321      321           
  Branches        5        4    -1     
=======================================
  Hits          254      254           
  Misses         67       67           

Flag	Coverage Δ
unittests	79.12% <ø> (ø)

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