Fix decoding ReadPropertyMultipleAck + add more ReadRangeValueTypes

[mnbbrown]

~ReadPropertyMultipleAck::new_from_buf doesn't take a reader, so it will attempt to decode from the beginning of the slice. This fixes it to only pass the remaining buf.~ (you beat me too it)

Add more support for decoding ReadRangeValueType (bool, unsigned, signed and NULL).