Use NNUE with libnnueprobe so no need to install tflite

[jesusmontera]

Hello, your engine is very nice, I've replaced your NNUE code with lib nnueprobe so there's no need to install tflite (witch i've couldn't install in my lubutntu 18,04 pythin 3.8 3.6 ... ). Also the main search is more clear for beginner's. I've used nn-04cf2b4ed1da.nnue, and I think must be the same performance(2 draws 5 seconds move vs stockfish set to 2000 ELO). . I don't know if ordering moves also with nnue evaluation could be better than with basic evaluation for alpha-beta.