Remove libjpeg sources from repo and use turbojpeg instead

[flsobral]

• [x] Convert totalcross custom code injected inside the jpeg sources in proper bindings for streams
• [x] Build jpegturbo automatically as a static library using CMake with SIMD enabled
• [x] Remove libjpeg sources from repo
• Test new build on every target
  • [ ] Linux x64
  • [x] Linux arm32v7
  • [ ] Linux arm64
  • [ ] Android
  • [ ] iOS
  • [ ] Win32
  • [ ] WinCE
  • [x] MacOS (only used for debugging, but that's important for development)
• [x] Test performance on iMX6ULL

[flsobral]

Results observed using a 2500x1095 image on a iMX6ULL:

loading the image at full size: 50% faster using Image.getJpegBestFit to load the image at 1250x548: 20% faster

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