feature(async): support async func in action and manual to close child worker

[GitHubJiKe]

To resolve issues: setInterval dosen't work of vue-worker, add async way to handle action's func

[GitHubJiKe]

example code:

SWorker.run(async () => {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve('SWorker run 1: Function in other thread')
    }, 2000)
  });
})
  .then((res)=>{
console.log(res.data);
setTimeout(()=>{
    res.close();// after 3 seconds close the running worker
},3000)
}) // logs 'SWorker run 1: Function in other thread'
  .catch(console.error) // logs any possible error