RISC-V sandboxing library

RISC-V sandboxing library is a high-performance, ultra-low-latency RISC-V userspace emulator library written in modern C++, designed for embedding and sandboxing applications. Unlike full-system emulators, it focuses specifically on executing user-space programs, making it ideal for scenarios such as sandboxed execution, scripting engines, and high-performance server environments. The library is engineered to achieve extremely fast startup and execution times, with the ability to run large numbers of virtual machines concurrently with minimal resource usage. It provides a safe and type-checked interface for system calls and host interactions, reducing the risk of security vulnerabilities during execution. libriscv also supports advanced features such as pause and resume, serialization of execution state, and integration with debugging tools like GDB. Its modular design allows developers to embed the emulator into larger systems and customize behavior for specific use cases.