feat: add GHA for R CMD chek

[mcanouil]

This PR add GHA workflow from r-lib/actions (https://github.com/r-lib/actions/blob/v2-branch/examples/check-standard.yaml) in order to check R package using Continuous integration to detect issues earlier than CRAN submission.

See #165

[dcomtois]

Thanks for this.... I wonder if additional packages might be added to the yaml template though...? Like magick for instance. This is totally new stuff to me.

[mcanouil]

Thanks for this.... I wonder if additional packages might be added to the yaml template though...? Like magick for instance. This is totally new stuff to me.

In theory, all packages needed to check the package are listed in DESCRIPTION. But, if for some reason, you need more you can add them in the following block of the yaml: https://github.com/dcomtois/summarytools/blob/bf08c345279cdc810e16f84b4adab6e1a5d926c0/.github/workflows/check-standard.yaml#L42-L45 See documentation at https://github.com/r-lib/actions/tree/v2-branch/setup-r-dependencies

[dcomtois]

Sorry for the delay. Merged. Many thanks.