feat: add jesd204b_rx toplevel entity

feat(link): add error handler entity for managing data link errors (lane misalignment, frame misalignment, not in table error, disparity error, unexpected character error)

feat(link): add counting of wrong sync characters on the same place in frame alignment

chore: add ignoring of undo-tree files created by emacs

fix: build sources that are in top of src/ directory

feat(descrambler): add descrambler entity

feat(link): add data link layer component connecting all data link components

feat(link): output frame_character from data link, add user_data to character

feat(link): add link controller

feat(data): remove ERR state

feat(data): switch to ILS mode in ilas parser when received non K character in CGS

feat(data): do not reset config when switching from ILS to DATA

feat(link): implement ilas parser

feat(link): add part of ilas parsing

fix(link): move start of ilas config to correct octet (3rd), send 28.4 before ilas config

feat(link): add ilas parser declaration

feat(link): add ilas parser testbench

feat(link): add link config record type

feat(link): wait for K character in frame alignment before setting aligned

feat(link): add lane alignment testbench