Support for AccessorySetupKit on iOS side

[RageshAntony]

When trying to unpair a BLE device on iOS via app, it's not possible due to limitation of iOS rules.

The AccessorySetupKit on iOS allows the app to handle the BLE device. Also no Bluetooth permission needed. AccessorySetupKit makes a BLE device as an accessory for an app. The developers need to add some info about the devices in info.plist and only that devices can be connected.

Can we have AccessorySetupKit support in universal_ble?

Like:

1. Add device details in info.plist of the app uses this lib
2. Add image in XCode assests of the app uses this lib
3. execute UniversalBle.connect(viaAccessorySetupKit_on_iOS : true, askImage: 'mydevice' )