Release rim 0.3.0 · r-lib/rig

New rim rstudio command to open a project in RStudio with the specified
R version.
rim add now performs additonal tasks, to give you an R installation that
is ready to use:
- It installs pak for the newly added R version, it is wasn't
  installed before. You can opt out of this with the --without-pak option.
  You can select the pak version to install with --pak-version.
- Sets the default R version after installation to the newly
  installed version, if no default is set.
- Sets the default CRAN mirror to the cloud mirror in the
  system profile, after installation (#11).
- Sets up RStudio Package Manager (RSPM) as the default repository, if
  your system is supported. See
  https://packagemanager.rstudio.com for more about RSPM. The systems that
  are supported by both RSPM and rim are Windows, and Ubuntu Linux
  18.04, 20.04 and 22.04, all of them on x86_64 architectures only (#15).
rim add now only caches downloaded files for a day.
rim system add-pak now has a new option --pak-version to specify the
pak version to install (stable, rc or devel). Its --devel option is
now deprecated.
rim list now marks the default R version (if any) with (default) (#38).

Windows

rim has a Chocolatey package now, so on Windows you can install it with
choco install rim and upgrade it with choco upgrade rim.
On Windows rim default <version> now sets the default R version in the
Windows Registry as well, which changes the default for RStudio.
(Make sure you set the R version in RStudio to the machine's default
version in Tools -> Global Options -> Basic -> General -> R version.)

On macOS rim system fix-permissions now sets the permissions and group
of the Current link. Also, rim add now calls rim system fix-permissions
for all installed R versions, because the R installed changes the
permissions of all of them.