[DOC]: Revisit README from the multi-language perspective

[gevtushenko]

Is this a duplicate?

• [X] I confirmed there appear to be no duplicate issues for this bug and that I agree to the Code of Conduct

Is this for new documentation, or an update to existing docs?

New

Describe the incorrect/future/missing documentation

We provide CUDA Core Libraries in C++ and Python, but our README.md is C++-centric. We should revisit README.md and GitHub project description to focus on CUDA Core Libraries rather than concrete programming language.

If this is a correction, please provide a link to the incorrect documentation. If this is a new documentation request, please link to where you have looked.

No response