Investigate support of retrieving connected peripherals upon scanning

[Supereg]

Problem

CoreBluetooth provides support to retrieveConnectedPeripherals(withServices:). This returns a set of devices that are already connected to the device via different centrals.

We might need to check if that is a method CoreBluetooth should consider calling when scanning for a set of service ids. E.g., there might be peripherals connected the device via different applications that don't send bluetooth advertisements if their are already connected. This is where the above-linked method from CoreBluetooth comes in handy.

Solution

A solution would be to retrieve the list of connected devices upon scanning for nearby services. The biggest problem here is that we won't be able to reconstruct the AdvertisementData of a device. We would be missing their advertisedService and wouldn't be able to match it to a DeviceConfiguration (e.g., we have a similar problem in #16 where we would need a 2-step discovery step). Further, advertised information like he localName wouldn't be available and we might have unexpected naming if a device is retrieved via this route.

Additional context

No response

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