Wuffs backend may be needed and code of wuffs std library can be probably reused
https://github.com/google/wuffs

It is both a memory-safe programming language and [the standard library having the stuff we usually have in KS runtimes](https://github.com/google/wuffs/tree/main/doc/std). The results are transpiled into C.

Should we also reuse their std library and remove as much code as we can from C and C++ runtimes?

@DarkShadow44 @nigeltao