Fix: Add missing ArtifactsPath property to dotnet restore

[SigtryggurO]

Add missing ArtifactsPath property to dotnet restore

I confirm that the pull-request:

• Follows the contribution guidelines
• Is based on my own work
• Is in compliance with my employer

[ITaluone]

Is this an undocumented argument? I cannot see this on the restore command...

[MikeFarrington]

Is this an undocumented argument? I cannot see this on the restore command...

It's not undocumented, but it looks like that page by Microsoft is not version-specific and caters to a least-common denominator of .NET Core 3.

This shell command

dotnet restore /?

Yields a more up to date result (I have the latest SDKs installed):

Description:
  .NET dependency restorer

Usage:
  dotnet restore [<PROJECT | SOLUTION>...] [options]

Arguments:
  <PROJECT | SOLUTION>  The project or solution file to operate on. If a file is not specified, the command will search the current directory for one.

Options:
  --disable-build-servers             Force the command to ignore any persistent build servers.
  -s, --source <SOURCE>               The NuGet package source to use for the restore.
  --packages <PACKAGES_DIR>           The directory to restore packages to.
  --ucr, --use-current-runtime        Use current runtime as the target runtime.
  --disable-parallel                  Prevent restoring multiple projects in parallel.
  --configfile <FILE>                 The NuGet configuration file to use.
  --no-http-cache                     Disable Http Caching for packages.
  --ignore-failed-sources             Treat package source failures as warnings.
  -f, --force                         Force all dependencies to be resolved even if the last restore was successful.
                                      This is equivalent to deleting project.assets.json.
  -r, --runtime <RUNTIME_IDENTIFIER>  The target runtime to restore packages for.
  --no-dependencies                   Do not restore project-to-project references and only restore the specified project.
  -v, --verbosity <LEVEL>             Set the MSBuild verbosity level. Allowed values are q[uiet], m[inimal], n[ormal], d[etailed], and diag[nostic].
  --interactive                       Allows the command to stop and wait for user input or action (for example to complete authentication).
  --artifacts-path <ARTIFACTS_DIR>    The artifacts path. All output from the project, including build, publish, and pack output, will go in subfolders under the specified path.
  --use-lock-file                     Enables project lock file to be generated and used with restore.
  --locked-mode                       Don't allow updating project lock file.
  --lock-file-path <LOCK_FILE_PATH>   Output location where project lock file is written. By default, this is 'PROJECT_ROOT\packages.lock.json'.
  --force-evaluate                    Forces restore to reevaluate all dependencies even if a lock file already exists.
  -a, --arch <ARCH>                   The target architecture.
  -?, -h, --help                      Show command line help.

It's not just 'restore' that accepts --artifacts-path, other commands like 'build' accept it as well. DotNetBuildSettings already got the SetArtifactsPath treatment, but DotNetRestoreSettings hadn't.