Draft: FT decoding v7 in Allen

This will not be merged as the branch has a sorry commit history, but it will make testing and discussion easier.

Missing (essential):

• current state of the branch fails tests in Allen, but local work passes them -> I need to do a round of debugging to see what is happening;
• Moore tests bug in the FTRawBankDecoder step, need to see why, could simply be because of the hacks needed to test v7
• Current link maps are not the real ones, need to create them;
• In case the link map does not correspond to reality, crashes ensue. Need to safeguard the code against seg faults at the very least
• Just had a segfault running with the wrong conditions. This needs to be much better protected
• Related: hardcoded station-1 statements spell difficult-to-debug disaster when an invalid channel is encountered. In general the station = [1,2,3] and station = [0,1,2] conventions need to be spelled out much better.