* add source Trustpilot * add airbyte_secret to `client_secret` config * add primary key to BusinessUnits, refactor state_cursor_field naming * refactoring, various fixes, integration tests passed * improve code * fix incremental unit test * fix class naming * fix unit tests * fix pflake8 issues * add source spec into seed file * auto-bump connector version --------- Co-authored-by: Marcos Marx <marcosmarxm@users.noreply.github.com> Co-authored-by: marcosmarxm <marcosmarxm@gmail.com> Co-authored-by: Octavia Squidington III <octavia-squidington-iii@users.noreply.github.com>