iOS find phone

[asyba]

Explanation here: coredevices/PebbleOS#1326

[asyba]

cc #198

[sjp4]

As mentioned in the FW PR, we don't want to do this without a permission system. We also want to add a native find-my-phone app which works cross-platform (handled entirely by the mobile app, not pkjs), which would would mean this isn't required (i'm not sure how many legitimate use-cases there are for your phone making a noise apart from find-my-phone)

[asyba]

@sjp4 I did like that to offer if other developers wants to create there own findby app, but if core team is doing that, that is okay.

[asyba]

I will try the approach as native app.

[asyba]

@sjp4 with this new approach as native app? We don't need to have a"permission system", or you still want to have it even if the feature is only used by PebbleOS stock apps?
I did't yet push the change for pebbleOS PR, depending of you anwer above.