investigate possibility of using `nob.h`

[elf-alchemist]

3.0.0 (2026-01-13) Improve C++ support (by rexim)
- Fix various C++ compilers warnings and complains throughout the code.
- Reimplement nob_cmd_append() without taking a pointer to temporary array (some C++ compilers don't like that)
- Make default NOB_REBUILD_URSELF() try to recompile with C++ if __cplusplus macro is defined

should be just compatible enough to work with C++