UT TELL40 encoder/decoder v1r1

Encoder/Decoder for UTDigit with UT TELL40 format are added and ready for tests. The implementation of the new decoder is in Rec!2240 (merged)

Goes together with Lbcom!537 (merged), Boole!317 (merged), Rec!2240 (merged), Moore!695 (merged)

Could you please comment on the backward compatibility of this code? It is not necessary to be backward compatible for the encoding, but for decoding it is highly desirable that you can also decode existing simulated data.

Please give a more meaningful title to the MR, this is what will appear in the release notes, so should describe (concisely) what the change does.