feat: add multipoint link support

tests: adjust tests for new changes

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

feat: make sync aligned to frame clock

Resolves #21

feat: move all link configuration to generic instead of ports

Configuration is same for one compilation, it cannot change.
Thus it does not make sense to be a port.
Resolves #13.

feat(tests): add tests for jesd204b_rx toplevel entity

chore: update frame alignment tb

Merge pull request #14 from Rutherther/feat/add-frame-clock

Add frame clock handling

feat: make frame alignment output aligned octets in frames instead of octets

feat: update frame alignment testbench to work with new frame alignment

tests: update octets_to_samples tests

feat: add ring_buffer for std_logic_vector

chore: add Quartus project with configured testbenches

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

feat(transport): add testbenches for transport layer

Simple 1 lane CF = 0, 1 lane CF = 1,
multi lane L = 2, CF = 2, M = 4, S = 2 (2 lanes, 2 control words, 4 conventers, 2 samples per frame)

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

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

feat(link): add link controller

feat(link): implement ilas parser

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