fix: add missing #include <memory> for std::unique_ptr

[LorrinWWW]

Problem

The hopper_grouped_gemm.h file uses std::unique_ptr but was missing the <memory> header include. This caused compilation errors when building the eps package:

error: qualified name is not allowed
    std::unique_ptr<Impl> impl_;
    ^

error: this declaration has no storage class or type specifier
    std::unique_ptr<Impl> impl_;
    ^

Solution

Added #include <memory> to the header file to properly declare std::unique_ptr.

Testing

• Built the eps package successfully after this fix
• The change is minimal and follows C++ standard library best practices