Nils Andreas Svee
a6478c9bd4
Add uci-derive proc-macro crate with UciConfig and UciSection derive macros that generate UCI schema metadata from Settings structs. The schema maps UCI section types and option names to config-rs field paths. UciSource::from_schema() creates a source from the derived schema, mapping known UCI options to their Settings fields while preserving unknown options under raw UCI-derived paths.