Added copy_payload

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>
Added rank callback class

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>
Added class to count numer of symbols encoded

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>
Added callback class for encoded symbols

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>
Added class to count number of symbols generated

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>
Added callback class for symbol generated

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>
Added an example to try new features

Signed-off-to-Steinwurf-by: Chres Wiant Sørensen <cwso08@student.aau.dk>