Replace generic void* parameters with proper types (strings, primitives, structs) for better type safety and more idiomatic Rust code. Change-Id: Iced1c2de96564be7ec599f14bf1a685eaede2768 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/191477 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <stephan.bergmann@collabora.com>