Extend `ndn::Interest` class to encode and decode **Parameters** element. This is part of [[nfd:Packet03Transition]]. `Interest::wireEncode` function should support both v0.2 and v0.3 format. If Parameters element is present, it encodes to v0.3 format; when v0.3 format is selected, if any v0.2-only element (such as MinSuffixComponents) was specified, they would not appear in the encoded packet. Otherwise, it encodes to v0.2 format. `Interest::decode03` function should recognize and store Parameters element. `Interest::decode02` function remains unchanged.