ASFHyP3/hyp3-sdk: HyP3 SDK v0.6.0

Added asf_search module will now raise an exceptions.ASFSearchError when it encounters problems and will include the Search API response details HyP3.__init__ now accepts a prompt=True (default False) keyword argument which will prompt users for their username or password if not provided Changed HyP3 prepare and submit methods now include processing options as named parameters Exceptions raised for HyP3 errors will include the HyP3 API response details asf_search.get_nearest_neighbors is no longer dependent on state vector information in CMR now limited to Sentinel-1 granules now raises ASFSearchError when the reference granule cannot be found results no longer include perpendicularBaseline or temporalBaseline fields Fixed get_authenticated_session now correctly throws AuthenticationError when no .netrc file exists and no credentials are provide