store clkn in the correct variable

pkt->clock is never set but used for decoding packets
remove it and use pkt->clkn instead

trim whitespaces at the end of a line

Add modulation/transport to packet data
- This should improve our mapping from packet -> pcap

Set max payload length based on packet type
- Also added #defines for packet type values

Fix duplicate typedef warning (for clang users)

Build libbtbb and pcaptools using cmake