Add support for font .bin files

[AJenbo]

Font symbol width are contained in .bin files, they are simply 256 bytes, with each byte being the width of a single frame

Depends on #100 for PCX support

[glebm]

These days font widths are in txt files, one per line (for ease of editing)
https://github.com/diasurgical/devilutionx-assets/tree/main/bundled-assets/fonts

[AJenbo]

That's only true for DevilutionX's font's not the original one.