GitLab

* [ci] consolidate R package installs into a CI script

* use CRAN_MIRROR and R_LIB_PATH consistently

* shorter lines and fix reference

* fix type option

* add extension

* fix invocations on Windows

* more fixes

* binary

* use package_type binary on Windows

* Update .ci/test-r-package-windows.ps1

* more fixes

* Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* make install-r-deps more flexible

* Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

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Co-authored-by: Nikita Titov <nekit94-08@mail.ru>