More reliable package resolution and stable Package.resolved files

CLI 4.200.1 ships an updated SwifterPM engine. Package resolution now runs through a SwiftPM subprocess instead of being linked directly into the Tuist binary, which makes Tuist less likely to break when SwiftPM internals change. The update also fixes unreliable downloads of binary artifacts (such as xcframeworks) in some cache states, and reduces unnecessary diffs in Package.resolved between runs.