chore: rename some ports and generics to better match function

chore: specify ranges for all integers

Ranges are not needed inside of tesbenches.
Resolves #22.

chore: add documentation to the code

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

feat(data): remove ERR state

feat(link): add link config record type

feat(link): add lane alignment

fix(link): rename data_link package to data_link_pkg

feat(link): add frame alignment