Setup QA test harness

[codecov-commenter]

Codecov Report

Patch coverage: 42.85% and project coverage change: -7.12 :warning:

Comparison is base (38250db) 80.00% compared to head (2065c66) 72.88%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #20 +/- ## ========================================== - Coverage 80.00% 72.88% -7.12% ========================================== Files 30 31 +1 Lines 115 118 +3 Branches 2 3 +1 ========================================== - Hits 92 86 -6 - Misses 23 30 +7 - Partials 0 2 +2 ``` | [Impacted Files](https://app.codecov.io/gh/Seddryck/Tseesecake/pull/20?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=C%C3%A9dric+L.+Charlier) | Coverage Δ | | |---|---|---| | [Tseesecake/Engine/QueryEngine.cs](https://app.codecov.io/gh/Seddryck/Tseesecake/pull/20?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=C%C3%A9dric+L.+Charlier#diff-VHNlZXNlY2FrZS9FbmdpbmUvUXVlcnlFbmdpbmUuY3M=) | `0.00% <0.00%> (ø)` | | | [Tseesecake/Engine/ElementalQuery.cs](https://app.codecov.io/gh/Seddryck/Tseesecake/pull/20?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=C%C3%A9dric+L.+Charlier#diff-VHNlZXNlY2FrZS9FbmdpbmUvRWxlbWVudGFsUXVlcnkuY3M=) | `85.71% <100.00%> (ø)` | | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/Seddryck/Tseesecake/pull/20/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=C%C3%A9dric+L.+Charlier)

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