Starting response parsing, adding GetHIT and GetHitsForQualificationType operations

Signed-off-by: Thomas Steffes <tsteffes@roomkey.com>
GetHIT, SearchHITs, GetHITsForQualificationType, DisableHIT, and DisposeHIT request & response parsing implementation

Signed-off-by: Thomas Steffes <tsteffes@roomkey.com>