DragonOS-Community/printf-compat: printf impl in Rust

cermin dari https://github.com/DragonOS-Community/printf-compat

JC 194a832ab6 Add minimal executable to ensure lib is no-std and no-alloc		2 tahun lalu
..
ensure_no_std	194a832ab6 Add minimal executable to ensure lib is no-std and no-alloc	1 bulan lalu