Mvic mpf driver (#485)

* Added legendre distortion model

* tests and data for mvic driver

* Initial NewHorizonsMvicIsisLabelNaifSpiceDriver

* Added missing import

* Renamed labels

* Fixed failing tests

* converted to mvic framer

* Added legendre distortion model

* tests and data for mvic driver

* Initial NewHorizonsMvicIsisLabelNaifSpiceDriver

* Added missing import

* Renamed labels

* Fixed failing tests

* Added ephemeris start/stop times

* Replaced mvic tdi isd with mvic framer isd

* Added data for mvic framer

* Updated mvic framer tests

* Address PR feedback

* deleted unused files

* Renamed mvic_isd to mvic_mpf_isd

* Address PR feedback