Implement proper overview page

[Valentin Brandl]

Implement some kind of overview

[Yegor Bugayenko]

@vbrandl at least show some simple text, for now, saying that "This project has 777 hits of code"

[Valentin Brandl]

@yegor256 I just implemented the overview page. Once the CI pipeline has finished, I will deploy the new version and you can have a look at it.

Edit: The new version is now deployed. Here's an example of the new overview page: https://hitsofcode.com/view/github/vbrandl/hoc

[Yegor Bugayenko]

@vbrandl thanks!