Support pthread scheduling functions for WASM

[iddm]

According to emscripten, the pthread is supported. I quickly went through the documentation and found many things out of it implemented but also a few things which aren't there, for example:

• pthread_setschedparam
• pthread_getschedparam

And a few others.

Is there any reason those aren't added? Maybe these, in particular, aren't supported for wasm and emscripten? Can I add those if those are supported? P.S. Asking mainly due to the support of wasm has been asked for in the thread-priority crate.