Configure SwifterPM materialization via install passthrough

Tuist now verifies that SwifterPM’s –cached-directory-materialization option (automatic, copy, or symlink) can be configured through the existing install passthrough path, either via Config.project.generatedProject.installOptions.passthroughSwiftPackageManagerArguments or the TUIST_INSTALL_PASSTHROUGH_ARGUMENTS environment variable. This keeps the CLI surface small while still exposing the SwifterPM materialization strategy to users.