run navigation in background
Get GPS updates to announce turn instructions even if the app is in background or if screen is off.
Unfortunately this is currently not possible with a web API, see https://github.com/w3c/ServiceWorker/issues/745 or https://github.com/w3c/geolocation/issues/214.
And CapacitorJS removed the background task plugin in v4.x and the location plugin "stops location updates when the app goes into background state" - see here.
We could try if the background-runner API works for this but this is available only in v5.x. It seems the background-runner is something different like we need, because they announced that " A Background Tasks Capacitor Plugin is coming soon!" here in March 2023, which seems exactly what we need.
Or we could try this plugin.