Add upload_coverage_report.yml

[vil02]

Pull Request Template

Description

This PR integrates this repository with Codecov (TheAlgorithms exist there already). You can see the result for this PR here.

The created yml file was checked with yamllint with --strict flag.

Type of change

Please delete options that are not relevant.

• generate and upload code coverage report to Codecov.

Checklist:

• I ran bellow commands using the latest version of rust nightly.
• I ran cargo clippy --all -- -D warnings just before my last commit and fixed any issue that was found.
• I ran cargo fmt just before my last commit.
• I ran cargo test just before my last commit and all tests passed.
• I added my algorithm to the corresponding mod.rs file within its own folder, and in any parent folder(s).
• I added my algorithm to DIRECTORY.md with the correct link.
• I checked COUNTRIBUTING.md and my code follows its guidelines.

Please make sure that if there is a test that takes too long to run ( > 300ms), you #[ignore] that or
try to optimize your code or make the test easier to run. We have this rule because we have hundreds of
tests to run; If each one of them took 300ms, we would have to wait for a long time.

[codecov-commenter]

Welcome to Codecov 🎉

Once merged to your default branch, Codecov will compare your coverage reports and display the results in this comment.

Thanks for integrating Codecov - We've got you covered ☂️

[vil02]

@siriak could you add the CODECOV_TOKEN from here as a secret, in such a way, that it would be used in upload_coverage_report.yml as

token: ${{ secrets.CODECOV_TOKEN }}

The upload to codecov without the token is very unstable (and it will be deprecated in v4).

[siriak]

The secret will not be passed to workflows triggered from forks (which 99% of PRs are from).
I've been using it here for a long time and saw no problems with it uploading without a token.

[vil02]

The secret will not be passed to workflows triggered from forks (which 99% of PRs are from).

I haven't thought about that.

I've been using it here for a long time and saw no problems with it uploading without a token.

On some days codecov really has some issues (just have a look at all of these failed runs).

In any case: should I do something additional regarding this PR?

[siriak]

Let's give it a try without authentication first. If we see any issues or v3 is deprecated, we'll explore using authentication. I'd like to add it even today, but see no way to make it work at the moment.