Implement HADDPS instruction

[rameshvarun]

This PR adds the HADDPS instruction, which fixes this issue. This allows the KolibriOS Raytracing demo to run. Numeric exceptions aren't implemented.

Documentation:

• https://c9x.me/x86/html/file_module_x86_id_133.html
• https://www.felixcloutier.com/x86/haddps

[copy]

Thanks! Should be good to merge after running cargo fmt --all.

[rameshvarun]

I'm currently on cargo 1.71.0-nightly (d0a4cbcee 2023-04-16). cargo fmt --all gives me a much larger diff - https://pastebin.mozilla.org/3fHiGA9Y

Unsure if the formatting logic in cargo changed recently. In any case, there don't seem to be any formatting changes WRT to the lines of this PR.

[copy]

In any case, there don't seem to be any formatting changes WRT to the lines of this PR.

Indeed, I misread the indentation on github. All good, merged! Cheers.