Thank you a lot.
There are actually two repositories (mirroring each other) on both GitHub and GitLab, but they may not be visible enough.
I changed the front page here on Itch, hopefully they're easier to see now, also I have thought about either making a dedicated subreddit or post on my reddit profile (the project is still relatively small), so I'm not sure. (I'm terrible when it comes to marketing).
I even thought about converting everything into an openbook (using MediaWiki instead of Pandoc) to eventually attract more contributors, but I'm not really sure how difficult the process would be, and the impact on the project's visibility.
Thank you for your suggestions and encouragement, it means a lot to me.