Use "division-by-multiplication" scheme to fasten division

[Melirius]

@mcroomp, unfortunately this is not working, not enough precision for all u16 range

lepton_jpeg_rust/src/structs/quantization_tables.rs

Line 88 in 2f8c324

let mut retval = (1u32 << 31) + v as u32 - 1;

Even 2^32 fails - first at 17215. A classical scheme from Warren should work, but it has variable shifts.

[Melirius]

I wanted to make this, but you are faster :)