magnetar v1.0.1 — crates.io package rename

Changed

• Renamed the published crates.io packages to avoid a name collision (the magnetar name is held by an unrelated, abandoned crate): the façade ships as magnetar-driver and the CLI as magnetarctl (binary command magnetarctl). The façade's library/import name is unchanged — use magnetar::* still works; only the dependency line differs (magnetar-driver = "1.0.1"). No API, behavior, or wire-format change. (ADR-0067)