Newly scripted footprints for LQFP 44 and 48

This replaces the 44 and 48 pin versions of the LQFP footprints with scripted ones. Script PR: pointhi/kicad-footprint-generator#245

LQFP-44_10x10mm_P0.8mm

Original documents not found. Used one from the symbols linking this footprint: https://www.nxp.com/files-static/shared/doc/package_info/98ASS23225W.pdf?&fsrch=1

LQFP-44_10x10mm_P0.8mm:
  size_source: 'https://www.nxp.com/files-static/shared/doc/package_info/98ASS23225W.pdf?&fsrch=1'
  body_size_x:
    nominal: 10
  body_size_y:
    nominal: 10
  overall_size_x:
    nominal: 12
  overall_size_y:
    nominal: 12
  lead_width:
    minimum: 0.3
    maximum: 0.45
  lead_len:
    minimum: 0.45
    maximum: 0.75
  pitch: 0.8
  num_pins_x: 11
  num_pins_y: 11

LQFP-48_7x7mm_P0.5mm

Original document not found. Used one of the symbol datasheets that link to this footprint: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2358-16.pdf

LQFP-48_7x7mm_P0.5mm:
  size_source: 'https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2358-16.pdf'
  body_size_x:
    nominal: 7
  body_size_y:
    nominal: 7
  overall_size_x:
    nominal: 9
  overall_size_y:
    nominal: 9
  lead_width:
    minimum: 0.17
    maximum: 0.27
  lead_len:
    minimum: 0.45
    maximum: 0.75
  pitch: 0.5
  num_pins_x: 12
  num_pins_y: 12