Port coverage filter options for packages and files

[KacperFKorban]

• Add -coverage-exclude-packages option that excludes packages and classes from generating coverage
• Add -coverage-exclude-files option that excludes files from generating coverage

[Kordyjan]

@sjrd will you have a moment to take a look?

[maslovalex]

It will be a great addition to 3.3.x LTS. Excluding generated files from coverage make Scala3 adoption easier when team has quality gates base on coverage.

Any plans to backport this ? (I see this in the Needs Assesment column https://github.com/orgs/lampepfl/projects/6/views/1?filterQuery=coverage)

[KacperFKorban]

@Gedochao @Kordyjan this might be a question for one of you