1. change quickjs lib from modernc.org/quickjs to github.com/fastschema/qjs for better control
2. add async sleep and simple fetch function for js (work as builtin function)
3. add a simple http related file to do any http related things

Next might be add fetch in starlark
and try to make it have async
and maybe make a settimeout?
also needed to extend fetch function (currently only have basic function)