This replaces NimBLEAdvertisedDeviceCallbacks with NimBLEScanCallbacks and adds a onScanEnd callback.
The callback parameter for NimBLEScan::start has been removed and the blocking overload for NimBLEScan::start
has been replaced by an overload of NimBLEScan::getResults with the same parameters.
Changes all functions that accept a time parameter to use milliseconds instead of seconds.
* Adds duration input to NimBLEDevice::startAdvertising and NimBLEServer::startAdvertising.
