Empty projects for e.g. Katas with testing support in different languages (usually with a failing test, in order to know where to start)
On the top level you can find different languages that are supported.
On the second level (in a particular language's directory) you'll find different testing frameworks that are supported.
In each directory for a particular framework, there is always a README.md file
that contains various useful information. At minimum it contains the
information on how to install the dependencies and run the tests.
You are welcome to contribute by submitting likewise a min setup for your language or framework of choice with a pull request. If possible please also create a github workflow.
Cookiecutter has a similar goal and also supports multiple languages for setting up a bare project.