v5: Speedup x86 decoding with the help of LUT tables

[trufae]

lu: Disassembled 37602620 instructions (35221820 valid, 2380800 bad), 6015.21 ms
v5: Disassembled 37602620 instructions (35221820 valid, 2380800 bad), 7291.75 ms

That's around 20% faster

Your checklist for this pull request

• I've documented or updated the documentation of every API function and struct this PR changes.
• I've added tests that prove my fix is effective or that my feature works (if possible)

Detailed description

arm64 disassembler uses lut tables to speedup decoding, x86 was the slow one here, so i just make it happen there
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Test plan

$ cat /tmp/b.sh
#!/bin/sh
C=$1
[ -z "$C" ] && C=2
rm -rf build
export CFLAGS=-O3
cmake -B build
make -C build CFLAGS=-O2 -j
make -C suite/benchmark clean
make -C suite/benchmark
suite/benchmark/test_file_benchmark $C 0 5651232 /usr/bin/vim
0$

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Closing issues

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[Rot127]

Good idea. I am not the biggest fan of allocating it instead of a static table, but we can change this once we find the time to update x86.

[Rot127]

Invert and return early please. Also CS_ASSERT_RET