1344733 - [meta] Update Telemetry JS modules to async function & await

Status: RESOLVED FIXED

Description

[Georg Fritzsche [:gfritzsche]]

We have `async function` and `await` now:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function

We should be able to switch all of the `Task.async`, `Task.spawn`, `function*` and `yield` uses over to those:
https://dxr.mozilla.org/mozilla-central/search?q=path%3Atoolkit%2Fcomponents%2Ftelemetry%2F+ext%3Ajs+ext%3Ajsm+Task.&redirect=false

The only case i can think of that doesn't migrate trivially is any `DeferredTask` usage, we could just leave that one for now.

Comment 1

[Georg Fritzsche [:gfritzsche]]

The dependencies here are resolved, closing.