Khaled Hosny authored Aug 03, 2023 and Khaled Hosny committed Aug 08, 2023

Currently detects only SFNT wrappers:
- WOFF: if it is FreeType says it is an SFNT font the file starts with wOFF tag
- WOFF2: the same but tag is wOF2
- SFNT: for any other SFNT font (which helps distinguishing standalone
  CFF fonts from CFF in SFNT aka OTF)

Fixes #375