Add convolutional encoder and decoder
This addition is a transfer of the conv_encoder and conv_decoder classes from gr-ccsds to gr-satnogs. Also, the necessary changes were made to be part of SATNOGS_API.
Edited by Michail Raptakis
This addition is a transfer of the conv_encoder and conv_decoder classes from gr-ccsds to gr-satnogs. Also, the necessary changes were made to be part of SATNOGS_API.