Move R Interface of Volesti to a New Repository

The main goal of this project is to create a dedicated repository for the R interface code of Volesti, a tool developed by GeomScale for volume computation and sampling in high dimensions. Currently, both the C++ and R interface code reside in the same repository. To achieve this, the existing codebase will be split into two separate repositories. This separation will involve modifying the package description file, R documentation files and R source code files in the new R interface repository. Additionally, the existing tests will be adjusted to match the new package structure and a comprehensive set of test cases will be developed to cover all the essential features of the R interface. Furthermore, the R interface code will be updated to ensure compatibility with the latest versions. Lastly, thorough documentation will be created for the new R interface, explaining the functionality of various functions and arguments, providing practical examples of package usage and demonstrating how the R package integrates with the wider Volesti ecosystem.