Fix coverage in CI pipeline

Previously, the test-and-coverage stage of the CI pipeline did not properly output coverage artifacts for gitlab.

This is now fixed, and the coverage is now a separate stage.

This should make the coverage widget work on this gitlab repo and on PyPi .

assigned to @Petrush

marked this merge request as draft

marked this merge request as ready

changed the description

merged

mentioned in commit 33e37621

Sorry I forgot to fix the name of the default branch, the coverage badge still doesn't work, I opened a new MR to fix that: !18 (merged)