touying-ambrosia:0.1.0 and touying-greyc-ambrosia:0.2.0

[inspiros]

I am submitting

• a new package
• an update for a package

Description: This submission splits the reusable presentation core out of the previously published touying-greyc-ambrosia theme:

• touying-ambrosia:0.1.0 is an institution-neutral Touying theme with independently configurable layouts, color palettes, branding, and navigation, plus an array of reusable slide helpers and components.
• touying-greyc-ambrosia:0.2.0 becomes a thin GREYC branding wrapper around that core, retaining its legacy layout and adding team branding and GREYC palettes. It also serves as an example of how to add institutional branding/flavor to touying-ambrosia.

Both support Typst 0.15+ and Touying 0.8.0. They are submitted together because the GREYC update depends on the new core package.

I have read and followed the submission guidelines and, in particular, I

• selected a name that isn't the most obvious or canonical name for what the package does
  • Explanation: Ambrosia, the food of the Greek gods, refers playfully to the theme's interchangeable “flavors”. It is a creative name rather than a canonical name for presentation themes; the existing GREYC name identifies its institution-specific wrapper.
• added a typst.toml file with all required keys
• added a README.md with documentation for my package
• have chosen a license and added a LICENSE file or linked one in my README.md
• tested my package locally on my system and it worked
• excluded PDFs or README images, if any, but not the LICENSE

• ensured that my package is licensed such that users can use and distribute the contents of its template directory without restriction, after modifying them through normal use.

Note: Similar to touying-greyc-ambrosia:0.1.0, this version bundles the same affiliation logos plus the newly added team logos, with authorization to re-distribute online. All logos are also publicly downloadable at https://www.greyc.fr/intranet/ and https://giguete.users.greyc.fr/com/.