RxBleDevice#getName with no BLUETOOTH_CONNECT permission

[dariuszseweryn]

Is your feature request related to a problem? Please describe.
Calling RxBleDevice#getName with no BLUETOOTH_CONNECT permission causes a SecurityException.

Describe the solution you'd like
In case BLUETOOTH_CONNECT permission is not granted RxBleDevice#getName would log a warning and return null. Add a javadoc comment that BLUETOOTH_CONNECT is needed on API >=31 for this function to return result.

Describe alternatives you've considered
Add a javadoc comment that BLUETOOTH_CONNECT is needed on API >=31 to call this function.

Additional context

java.lang.SecurityException: Need android.permission.BLUETOOTH_CONNECT permission for AttributionSource { uid = 10481, packageName = com.polidea.rxandroidble.sample, attributionTag = null, token = android.os.BinderProxy@5955a3e, next = null }: AdapterService getRemoteName

Related to #798