Integrate stb_truetype.h to rasterize TTF glyphs into 1-bit .FNT v3
format consumed by Win3.x display drivers. Key implementation detail:
.FNT bitmaps use column-major byte order (all rows of byte-column 0
first, then byte-column 1, etc.), not row-major.
New API: wdrvLoadFontTtf(path, pointSize) loads any TTF at any size.
Demo 7 renders Liberation Sans/Serif/Mono at 16/20/24pt.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
