Support Health Connect background fetch

[armanso]

HC introduced background fetch in Version 1.1.0-alpha09. According to the issue tracker I have, this feature is in production for the latest Android 14 version and above. Support for earlier versions will come later. Since it’s possible to check if this feature is available using a feature check, I would like to integrate this into a Flutter plugin as well.

I would be happy to take the lead on this and start the implementation if it’s not already on the roadmap.

You can find the documentation regarding background fetch here.