feat: rename jesd204b_rx to jesd204b_link_rx as it supports only one link

feat: allow synchronization request from outside

feat: prepare architecture for descrambling

feat(toplevel): order all arrays correctly using "to" instead of "downto"

feat: update jesd204b_rx to new frame clock

chore: add documentation to the code

fix(link): make testbenches work in quartus, fix old testbenches

fix: add generic data to transport layer

feat: add jesd204b_rx toplevel entity