Does GitHub provide some (native) way to track visitors on some hosted page (pages at *.github.io/project)?
I know we can see traffic on GitHub repositories and I thought there would be some similar features for pages but couldn't find anything.
GitHub has provided native "GitHub Traffic Analytics" since 2014.
Besides tracking visitors to your repository, it provides a 'content' panel where you can see the traffic to individual pages within that repository.
This is what it looks like:
If your GitHub page doesn't have enough traffic, or it's new, you'll see this: