viterbi coder/decoder for cpp and verolog

There is example for qt coder decoder vitervi with polinom g0=3'b111, g0=3'b101 in folder cpp

viterbi_enc -> encoder viterbi with configurable polinom viterbi_dec -> decoder viterbi with configurable polinom and support decoding with different speed viterbi_speed_map -> module for chnge speed encoder from 1/2 to 1/2, 2/3, 3/4 ...

tb_viterbi_enc.v -> examplse use viterbi modules

Now decoder viterbi support fix error only with speed 1/2