86Box 5.3 assets

What's Changed

• Added fdd samples for five drives + audio profile configuration file and readme.txt by @Domppari in #1
• Added missing 78up and 79down samples and updated 79up with correct sample by @Domppari in #2
• Add Alps 3.5" AMIBIOS BIOS POST test samples by @Domppari in #4
• Remove executable bit on wav files by @chungy in #5

New Contributors

• @Domppari made their first contribution in #1
• @chungy made their first contribution in #5

Full Changelog: https://github.com/86Box/assets/commits/v5.3