Unify test class naming: ...Test vs ...TestSuite

[PawelLipski]

Technically, these are more of test suites, as test in JUnit corresponds to single test method... however, suite has a specific meaning in JUnit, distinct from what we're using. Also, ...Test is less verbose than ...TestSuite.

[BykaWF]

Hi @PawelLipski, could I take it?

[PawelLipski]

Hey there... sure! pls first check if you can build the project (see CONTRIBUTING.md). Disclaimer: there might be problems with building on Windows :/ Linux and Mac are supported build platforms

[BykaWF]

Thanks @PawelLipski