Add Hyle Deco

**https://github.com/mbaliga/HyleDeco-gf**

**Font family name:** Hyle Deco
**Designer:** Madhav Baliga
**License:** SIL Open Font License 1.1
**Upstream repository:** https://github.com/mbaliga/HyleDeco-gf
**Styles:** Regular, Italic (static, hairline design)
**Glyph coverage:** GF Latin Core, 319 of 319 verified

Hyle Deco is a hairline deco display face built on a constant 44 unit stroke, drawn from hand made vector letterforms. Fontbakery googlefonts profile passes with zero failures on both styles; the report is included in the repository QA folder.

Disclosure: a niche academic Greek typeface named "Hyle 2.0" exists elsewhere. It is not on Google Fonts, is unrelated in design and origin, and the names are distinct. Raising it proactively to save reviewer time.

By opening this issue, I confirm the project meets the following requirements:

- [x] The entire font project is available in a Github repository (repo) and licensed under the [OFL](https://openfontlicense.org/open-font-license-official-text/)
- [x] The source files are available in the repo
- [x] I am the sole copyright author of the entire project, or all other copyright authors have licensed their work to me under the OFL, and I commit to clearly disclosing if AI tools were used in the creation of this project.
- [x] There are no "Reserved Font Names" in the OFL license information, or in the project documentation of any known upstream projects. If there are RFNs, they are not used in whole or in part in this family name, or, I want to discuss how Google can work with my use of them.
- [x] The family name is unique according to [namecheck.fontdata.com](https://namecheck.fontdata.com/)
- [x] The name of the font family expected to appear on app menus must be very clearly communicated and definitive. It should not include any copyright holder's full names or acronyms.
- [x] The font supports at least the Google Fonts 'Latin Core' glyphset from [github.com/googlefonts/glyphsets](https://github.com/googlefonts/glyphsets) ([direct link](https://github.com/googlefonts/glyphsets/blob/main/data/results/txt/nice-names/GF_Latin_Core.txt))
- [x] The repo has the [Google Fonts preferred upstream repo structure](https://googlefonts.github.io/gf-guide/upstream.html)
- [x] I have read, agree with, and comply with, the full [Google Fonts contributing requirements](https://googlefonts.github.io/gf-guide/index#pre-production-getting-your-fonts-ready-for-gf)
- [x] I will maintain the repository and participate in the onboarding process (addressing, solving, and responding to issues, merging pull requests, etc)

Start with the upstream HyleDeco-gf repository and its QA folder, then review the included Fontbakery reports and the Google Fonts contributing requirements. Check the Regular and Italic styles, licensing, naming, source structure, and glyph coverage. Done means the family passes the project’s review and is accepted for addition.

Written by the indexing model from the issue text.