Run covr on package and create report for GitLab

Utilize internal GitLab static pages to publish package coverage. Creates local covr report in a package subdirectory. Uses the pages GitLab job to publish the report.

gitlab(..., coverage = NULL, file = "public/coverage.html", quiet = TRUE)

Arguments

...	arguments passed to package_coverage()
coverage	an existing coverage object to submit, if NULL, package_coverage() will be called with the arguments from ...
file	The report filename.
quiet	if FALSE, print the coverage before submission.