Add string interfaces and new features to parse one message and wait for ack

[ttlappalainen]

System uses basic types to avoid std, so I do not prefer to add these.

[david-alonso-orca]

Yes, sorry @ttlappalainen . This was for internal usage in our fork. My mistake while creating PR.

[ttlappalainen]

I could probably accept it by using define. E.g., NMEA0183_USE_STD