As a dev, `check_as_cran()` should be able to take into account specific options

[MurielleDelmotte]

Validation criteria

• [ ] check_as_cran can be used with a specific repo

Technical

withr::with_options(list(repos = c(CRAN = "https://cran.rstudio.com/")),
                    {checkhelper::check_as_cran() })

check_as_cran does not take into account the repo option and it is not possible to modify it in the parameters of the function