Convert native cheat codes to the RetroArch format

There are a lot of cores currently that only support cheats in the RetroArch format, while this repo only provides codes in Native format (e.g. GameShark):

• https://docs.libretro.com/library/mupen64plus/#features
• https://docs.libretro.com/library/pcsx_rearmed/#features
• https://docs.libretro.com/library/flycast/#features
• https://docs.libretro.com/library/yabause/#features

This creates confusion among users, who assume cheat support is missing in these cores, while it is not the case actually: https://github.com/libretro/beetle-pce-fast-libretro/issues/93 https://github.com/libretro/beetle-saturn-libretro/issues/5

So i've made this quick and dirty script to convert the cheat tables format:
https://github.com/eadmaster/dotfiles/blob/main/bin/chtnative2retroarch.py

It's still missing support for encrypted/conditional/increment/activator codes, but i've found it's already working well in most cases.

Possibly it can be merged into the scraper script, to have the cheat tables converted automatically after download.

Start by reading scripts/scraper.py and comparing its current cheat-table download flow with the referenced chtnative2retroarch.py script. Review the linked RetroArch format documentation and the listed core limitations. Done means the scraper can automatically convert the downloaded native cheat tables where supported, while the remaining encrypted, conditional, increment, and activator codes are understood as limitations.