Improve thread pool invocation

[tshemsedinov]

New syntax:

const result = await domain.module1
  .doSomething(args)
  .thread({ exclusive: true });

[georgolden]

Questions:

• If we do a wrapper for all domain and lib functions that will force us to use async/await syntax everywhere. Should we wrap all functions to thenable in our case (similar wrapper Procedure has been done for api)?
• How are we supposed to keep some function unwrapped with this syntax?
• Thenable is not a Promise. How we are supposed to distinguish thenable and promise?

Example:

We have sync function here let it be lib/array/timesTen.js

(array) => array.map((el) => el*10)

If I want to just invoke this function inside my code that will look like this:

async ({ array }) => {
  return await lib.array.timesTen(array);
}

[tshemsedinov]

We will wrap just async functions, to call timesTen from another thread you need
async (array) => array.map((el) => el * 10)