ci: Add Codacy code coverage

[DaveSkender]

This only publishes the code coverage report to Codacy, for completeness of that record.

[DaveSkender]

@LeeDongGeon1996 you should be able to login to Codacy, I have you set as a user however, I’m not quite sure you have all the visibility that I do.

[LeeDongGeon1996]

@DaveSkender it's working! the problem was format of reporting file. It requires cobertura.xml format.

[LeeDongGeon1996]

@DaveSkender I cannot find our repository on my Codacy dashboard. Can you check about it?

https://app.codacy.com/gh/DaveSkender/Stock.Indicators.Python » is open to public, but I've also added you as a user, so you should be able to login and see more information, do more things, but am not sure how much you'll be limited since you're not the account owner (they don't seem to have additional roles for me to assign).
As a side note, I think coverage works on a differential basis, so it may not work entirely until a second commit to main after the initial baseline coverage is set. For example, the badge didn't work initially for the C# project, but was eventually able to add it to the contributing page.

Inconvenient... yeah I can access on that dashboard by my own, but seems I have no permission to manage something. I couldn't find even badge created. haha Okay, thanks for your quick check.