Function until

until(
    it: Iterable<any, any, any> | AsyncIterable<any, any, any>,
    callback: () => | undefined
    | boolean
    | void
    | Promise<undefined>
    | Promise<void>
    | Promise<boolean>,
): Promise<undefined>
Loops over a generator until it finishes, calling callback. Useful if you don't care about the value generator produces, just the number of loops.

In this version, we do a for await of over gen, and also await callback().
```
await until(count(5), () => {
// do something 5 times
});
```
If you want the value from the generator, use a for of loop as usual.

If callback explicitly returns false, the generator is aborted.
Parameters
- it: Iterable<any, any, any> | AsyncIterable<any, any, any>
  Generator to run
- callback: () => | undefined
  | boolean
  | void
  | Promise<undefined>
  | Promise<void>
  | Promise<boolean>
  Code to call for each iteration
Returns Promise<undefined>