New MQFP 44 footprint for ad7722

AD7722 is wrongly connected to a LQFP footprint right now. That footprint is desinged for quite different tolerance ranges in the package dimensions. This new footprint is specifically designed for this package.

Script PR: pointhi/kicad-footprint-generator#245

datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ad7722.pdf

MQFP-44_10x10mm_P0.8mm:
  size_source: 'https://www.analog.com/media/en/technical-documentation/data-sheets/ad7722.pdf'
  body_size_x:
    minimum: 9.8
    nominal: 10
    maximum: 10.2
  body_size_y:
    minimum: 9.8
    nominal: 10
    maximum: 10.2
  overall_size_x:
    minimum: 13.65
    nominal: 13.9
    maximum: 14.15
  overall_size_y:
    minimum: 13.65
    nominal: 13.9
    maximum: 14.15
  lead_width:
    minimum: 0.3
    maximum: 0.45
  lead_len:
    minimum: 0.73
    nominal: 0.88
    maximum: 1.03
  pitch: 0.8
  num_pins_x: 11
  num_pins_y: 11