feat(font): add fusion pixel

[OverflowCat]

Fusion Pixel Font is an open-source sans-serif pixel font designed to support Chinese, Japanese, and Korean (CJK) characters. It offers clear and sharp readability at 8, 10, and 12-pixel sizes.

The font has 3 pixel sizes, 2 styles (monospace and proportional), and 5 locales, resulting in a total of 30 combinations. Although I have added the locales using subsets, I am not entirely certain if they are functioning correctly (e.g., whether the family names are correctly assigned), as font files are renamed from different, separate locale-specific files.

Fonts added

fusion-pixel-8px-monospaced
fusion-pixel-8px-proportional
fusion-pixel-10px-monospaced
fusion-pixel-10px-proportional
fusion-pixel-12px-monospaced
fusion-pixel-12px-proportional

They are added using a script. I didn't include it here; check this branch. You need to run it using Bun.