Fonts bundled with docx-rs

These font files are redistributed unmodified from Debian bookworm packages
(https://deb.debian.org/debian/pool/main/). Each remains under its own licence;
see the files in this directory. Bundling them does not change the licence of
docx-rs itself.

- TeX Gyre Termes (fonts-texgyre 20180621-6): GUST Font License
  (GUST-FONT-LICENSE.txt, fonts-texgyre.copyright).
- OpenSymbol (fonts-opensymbol 102.12+LibO7.4.7-1+deb12u14): Mozilla Public
  License 2.0 (MPL-2.0.txt), incorporating Apache-2.0 material (Apache-2.0.txt);
  see fonts-opensymbol.copyright. Source form: LibreOffice sources,
  extras/source/truetype/symbol/OpenSymbol.sfd, available from
  https://download.documentfoundation.org/libreoffice/src/ and
  https://git.libreoffice.org/core.
- DejaVu Sans (fonts-dejavu-core 2.37-6): Bitstream Vera / DejaVu terms
  (fonts-dejavu-core.copyright).
- Carlito, Caladea, Liberation Sans and Liberation Mono (fonts-crosextra-carlito
  20220224-1, fonts-crosextra-caladea 20200211-1, fonts-liberation2 2.1.5-1):
  SIL Open Font License 1.1 (see each package's .copyright file).
