feat: org_log_repeat

[vaioure]

Separate logging settings for repeating TODOs

Implements #530

Unfortunately I couldn't figure out how to redraw the agenda view without setting redo in:

function Agenda:change_todo_state()
  return self:_remote_edit({
    action = 'org_mappings.todo_next_state',
    redo = true,
  })
end