Implement a function promiseWithResolver (deferred promise) that returns an object with resolve and promise fields.

The promiseWithResolver function creates a deferred promise, returning an object with the promise itself and a function to resolve it (resolve). This is useful when you need to control the resolution of the promise from outside.

Example implementation in JavaScript:

function promiseWithResolver() {
  let resolve;
  const promise = new Promise(res => {
    resolve = res;
  });
  return { promise, resolve };
}

// Usage:
const deferred = promiseWithResolver();
deferred.promise.then(value => console.log('Resolved with:', value));
deferred.resolve('Success');

In this example, resolve is accessible from outside, and we can call it at any time to resolve the promise.