Improve code coverage reports with added logs and fixed HTML/XML generation

[OlenaYefymenko]

• Change condition of generation HTML report for review coverage analysis;
• Fix double output in the coverage report;
• Add logs for HTML and XML reports generation and configured fail_under;

Ref #18

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (83166dc) to head (ffa7630).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #43 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 10 10 Lines 118 118 Branches 6 6 ========================================= Hits 118 118 ```

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[webknjaz]

@OlenaYefymenko it's better to only use the imperative mood in the PR/commit title lines but not in the long description prose.

[webknjaz]

Also, the PR title lists many things now while it's best to have exactly one thing that it does mentioned.