mini-ndn

Currently, MiniNDN performs NFD configuration tasks via scripting the NFDC utility. However, the NFDC utility is not guaranteed to have a stable interface as development moves forward. For the sake of long term stability it is important to remove the dependence on scripting this utility, which is possible via the NFD Management specification. We should take the opportunity to make an API for performing tasks along the lines of NFDC for MiniNDN hosts using this standard rather than creating a maintenance burden in the future.