Add codacy/codacy-coverage-reporter-action action to tests.yml

[rvhonorato]

This add integration with Codacy - https://app.codacy.com/gh/haddocking/haddock3/, in line with the other tools from the group

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for 56ca74a1	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (56ca74a)	Report Missing	Report Missing	Report Missing
Head commit (98f3fc7)	12214	9827	80.46%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#875)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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_{Codacy will stop sending the deprecated coverage status from June 5th, 2024. Learn more}

Footnotes

1. Codacy didn't receive coverage data for the commit, or there was an error processing the received data. Check your integration for errors and validate that your coverage setup is correct. ↩

[mgiulini]

I think these checks are way too strict..I would add this action later on in the project when the production version is stable/published and the development slows down

[rvhonorato]

There are no checks, it just display things over there and this is needed for FAIRness

*the checks are configured in the repository settings - none are configured right now, this PR just just sends the coverage report to codacy. If you don't want to send the coverage reports, the repository is still linked anyway to check for code quality https://app.codacy.com/gh/haddocking/haddock3/

[mgiulini]

There are no checks, it just display things over there and this is needed for FAIRness

*the checks are configured in the repository settings - none are configured right now, this PR just just sends the coverage report to codacy. If you don't want to send the coverage reports, the repository is still linked anyway to check for code quality https://app.codacy.com/gh/haddocking/haddock3/

ok, then can't it be hidden from the actions report? I really hate seeing failed actions (see #862) for reasons like this https://app.codacy.com/gh/haddocking/haddock3/pull-requests/862/issues#issue-da28e38929afc9695f2cd4cb38d5e415

[rvhonorato]

That's a configuration in codacy, has nothing to do with this PR