Fix manual roi setting

[Lyr3x]

Fix for #65 This is a breaking config change. The new config schema is:

roode:
  id: roode_platform
  i2c_address: 0x29
  update_interval: 10ms
  # roi:
  #   roi_height: 16
  #   roi_width: 6
  calibration:
    max_threshold_percentage: 85
    min_threshold_percentage: 5
    roi_calibration: true
  # manual:
  #   sensor_mode: 3
  #   manual_threshold: 1280
  #   timing_budget: 200
  # use_sampling: true
  invert_direction: true
  restore_values: false

roi:can be used to overwrite any ROI setting. Validation improved.